POWERbreathe uses the basic principles of resistance training. Within a few days of using this drug-free, easy-to-use hand-held device, your breathing muscles will feel stronger and within 3-weeks you’ll feel less breathless. Within 4 weeks activities, exercise and sports will feel easier. Use and Care: POWERbreathe uses the basic principles of resistance training. Just as you might use weights to strengthen your arm muscles, breathing in through POWERbreathe against the medium, variable resistance makes your breathing muscles work harder - thereby increasing their strength and endurance. Simply put the nose-clip on so that it pushes your nostrils together and then breathe in through the POWERbreathe (use a little extra effort than you would to breathe normally), and the device will do the rest. Improvement in breathing efficiency can be seen in as little as 4-weeks. Comes with full instructions. Laboratory Proven Training Regimen: Twice a day simply breathe 30 times through the device against the adjustable resistance. It takes less than 5-minutes. As your breathing muscle strength improves, simply adjust and increase the resistance as you would with any other form of exercise. Within a few days your inspiratory muscles will feel stronger and within 3-weeks you’ll feel less breathless. Within 4 weeks activities, exercise and sports will feel easier. Inspiratory muscle training (breathing muscle training), such as training with POWERbreathe, is not recommended for patients with a history of spontaneous pneumothorax (a collapsed lung that was not due to traumatic injury e.g. broken rib), as it may lead to a recurrence of the condition. Following a traumatic pneumothorax and/or broken rib, POWERbreathe should not be used prior to full recovery. Inspiratory muscle training is not suitable for asthma patients who have low symptom perception and who suffer from frequent sever exacerbations. Inspiratory muscle training is not suitable for anyone who has recently experienced a perforated eardrum. Anyone who is under the age of 16 should only use POWERbreathe with supervision from an adult.
Which model is right for you (red model)? For elite athletes and people who are in top physical condition who lead a very physically demanding lifestyle, whether professionally or socially. POWERbreathe uses the basic principles of resistance training. Just as you might use weights to strengthen your arm muscles, breathing in through POWERbreathe against the heavy, variable resistance makes your breathing muscles work harder - thereby increasing their strength and endurance. Within a few days of using this drug-free, easy-to-use hand-held device, your breathing muscles will feel stronger; within 3-weeks you’ll feel less breathless; and within 4 weeks activities, exercise and sports will feel easier. Cleaning Your POWERbreathe will be exposed to saliva during use. Their recommend that a few times a week you remove the valve head and soak it in warm water for about 10 minutes (see POWERbreathe Manual for full details), but once a week soak the valve head in a mild sterilising solution instead of water, using the POWERbreathe Cleansing Tablets - only 1 tablet is required each time.
PowerBreathe Plus Respiratory TrainerPOWERbreathe Plus - 2nd generation POWERbreathe Inspiratory Muscle Training series (breathing training), with hi-tech ergonomic design, optimised airflow performance and anti-bacterial qualities.POWERbreathe uses the basic principles of resistance training. Just as you might use weights to strengthen your arm muscles, breathing in through POWERbreathe against the light, variable resistance makes your breathing muscles work harder - thereby increasing their strength and endurance. Ideal for people who, because of illness or advancing age, are restricted by shortness of breath.Within a few days of using this drug-free, easy-to-use hand-held device, your breathing muscles will feel stronger; within 3-weeks you'll feel less breathless; and within 4 weeks every-day activities will feel easier.Who can benefit? People with a respiratory condition such as asthma (including exercise-induced), Chronic Obstructive Pulmonary Disease (COPD), bronchitis, cystic fibrosis (also suitable for children aged 10+ under adult supervision) People with a debilitating condition such as heart failure, heart disease, spinal injury People unaccustomed to regular physical exercise Anyone who gets out of breath easily SeniorsFeatures: Drug-free & natural with no side effects or drug interactions Scientifically proven, pressure threshold training technique Calibrated inspiratory load (light resistance) Adjustable 'light' training resistance (up to 10 adjustable training levels) Resistor/training level indicator Fully washable design Anti-bacterial mouthpiece Ergonomic mouthpiece design, suitable for adult & paediatric use Up to 65% improvement in airflow performance (vs. POWERbreathe Classic) Ergonomic grip design Fully integrated load mechanism Use & Care: Simply put the nose-clip on so that it pushes your nostrils together and then breathe in through the POWERbreathe (use a little extra effort than you would to breathe normally), and the device will do the rest. Improvement in breathing efficiency can be seen in as little as 4-weeks. Comes with full instructions. Laboratory proven training regimen: Twice a day simply breathe 30 times through the device against the adjustable resistance. It takes less than 5-minutes. As your breathing muscle strength improves, simply adjust and increase the resistance as you would with any other form of exercise. Within a few days your inspiratory muscles will feel stronger; within 3-weeks you'll feel less breathless; and within 4 weeks activities, exercise and sports will feel easier. Includes: POWERbreathe Plus Light Resistance Inspiratory Muscle Trainer (green, Wellness model) Ergonomic, soft-touch nose clip (also suitable for swimming) Fabric storage pouch 4 cleansing tablets User manual Precautions: If you have any doubts about the suitability of POWERbreathe, or you have a medical condition, please consult your doctor. Inspiratory muscle training (breathing muscle training), such as training with POWERbreathe, is not recommended for patients with a history of spontaneous pneumothorax (a collapsed lung that was not due to traumatic injury e.g. broken rib), as it may lead to a recurrence of the condition. Following a traumatic pneumothorax and/or broken rib, POWERbreathe should not be used prior to full recovery. Inspiratory muscle training is not suitable for asthma patients who have low symptom perception and who suffer from frequent sever exacerbations. Inspiratory muscle training is not suitable for anyone who has recently experienced a perforated eardrum. Anyone who is under the age of 16 should only use POWERbreathe with supervision from an adult. Buy PowerBreathe Nutrition & Training from Chain Reaction Cycles, the World's Largest Online Bike Store.
PowerBreathe Plus Respiratory TrainerPOWERbreathe Plus - 2nd generation POWERbreathe Inspiratory Muscle Training series (breathing training), with hi-tech ergonomic design, optimised airflow performance and anti-bacterial qualities.POWERbreathe uses the basic principles of resistance training. Just as you might use weights to strengthen your arm muscles, breathing in through POWERbreathe against the light, variable resistance makes your breathing muscles work harder - thereby increasing their strength and endurance. Ideal for people who, because of illness or advancing age, are restricted by shortness of breath.Within a few days of using this drug-free, easy-to-use hand-held device, your breathing muscles will feel stronger; within 3-weeks you'll feel less breathless; and within 4 weeks every-day activities will feel easier.Who can benefit? People with a respiratory condition such as asthma (including exercise-induced), Chronic Obstructive Pulmonary Disease (COPD), bronchitis, cystic fibrosis (also suitable for children aged 10+ under adult supervision) People with a debilitating condition such as heart failure, heart disease, spinal injury People unaccustomed to regular physical exercise Anyone who gets out of breath easily SeniorsFeatures: Drug-free & natural with no side effects or drug interactions Scientifically proven, pressure threshold training technique Calibrated inspiratory load (light resistance) Adjustable 'light' training resistance (up to 10 adjustable training levels) Resistor/training level indicator Fully washable design Anti-bacterial mouthpiece Ergonomic mouthpiece design, suitable for adult & paediatric use Up to 65% improvement in airflow performance (vs. POWERbreathe Classic) Ergonomic grip design Fully integrated load mechanism Use & Care: Simply put the nose-clip on so that it pushes your nostrils together and then breathe in through the POWERbreathe (use a little extra effort than you would to breathe normally), and the device will do the rest. Improvement in breathing efficiency can be seen in as little as 4-weeks. Comes with full instructions. Laboratory proven training regimen: Twice a day simply breathe 30 times through the device against the adjustable resistance. It takes less than 5-minutes. As your breathing muscle strength improves, simply adjust and increase the resistance as you would with any other form of exercise. Within a few days your inspiratory muscles will feel stronger; within 3-weeks you'll feel less breathless; and within 4 weeks activities, exercise and sports will feel easier. Includes: POWERbreathe Plus Light Resistance Inspiratory Muscle Trainer (green, Wellness model) Ergonomic, soft-touch nose clip (also suitable for swimming) Fabric storage pouch 4 cleansing tablets User manual Precautions: If you have any doubts about the suitability of POWERbreathe, or you have a medical condition, please consult your doctor. Inspiratory muscle training (breathing muscle training), such as training with POWERbreathe, is not recommended for patients with a history of spontaneous pneumothorax (a collapsed lung that was not due to traumatic injury e.g. broken rib), as it may lead to a recurrence of the condition. Following a traumatic pneumothorax and/or broken rib, POWERbreathe should not be used prior to full recovery. Inspiratory muscle training is not suitable for asthma patients who have low symptom perception and who suffer from frequent sever exacerbations. Inspiratory muscle training is not suitable for anyone who has recently experienced a perforated eardrum. Anyone who is under the age of 16 should only use POWERbreathe with supervision from an adult. Buy PowerBreathe Nutrition & Training from Chain Reaction Cycles, the World's Largest Online Bike Store.
PowerBreathe Plus Respiratory TrainerPOWERbreathe Plus - 2nd generation POWERbreathe Inspiratory Muscle Training series (breathing training), with hi-tech ergonomic design, optimised airflow performance and anti-bacterial qualities.POWERbreathe uses the basic principles of resistance training. Just as you might use weights to strengthen your arm muscles, breathing in through POWERbreathe against the light, variable resistance makes your breathing muscles work harder - thereby increasing their strength and endurance. Ideal for people who, because of illness or advancing age, are restricted by shortness of breath.Within a few days of using this drug-free, easy-to-use hand-held device, your breathing muscles will feel stronger; within 3-weeks you'll feel less breathless; and within 4 weeks every-day activities will feel easier.Who can benefit? People with a respiratory condition such as asthma (including exercise-induced), Chronic Obstructive Pulmonary Disease (COPD), bronchitis, cystic fibrosis (also suitable for children aged 10+ under adult supervision) People with a debilitating condition such as heart failure, heart disease, spinal injury People unaccustomed to regular physical exercise Anyone who gets out of breath easily SeniorsFeatures: Drug-free & natural with no side effects or drug interactions Scientifically proven, pressure threshold training technique Calibrated inspiratory load (light resistance) Adjustable 'light' training resistance (up to 10 adjustable training levels) Resistor/training level indicator Fully washable design Anti-bacterial mouthpiece Ergonomic mouthpiece design, suitable for adult & paediatric use Up to 65% improvement in airflow performance (vs. POWERbreathe Classic) Ergonomic grip design Fully integrated load mechanism Use & Care: Simply put the nose-clip on so that it pushes your nostrils together and then breathe in through the POWERbreathe (use a little extra effort than you would to breathe normally), and the device will do the rest. Improvement in breathing efficiency can be seen in as little as 4-weeks. Comes with full instructions. Laboratory proven training regimen: Twice a day simply breathe 30 times through the device against the adjustable resistance. It takes less than 5-minutes. As your breathing muscle strength improves, simply adjust and increase the resistance as you would with any other form of exercise. Within a few days your inspiratory muscles will feel stronger; within 3-weeks you'll feel less breathless; and within 4 weeks activities, exercise and sports will feel easier. Includes: POWERbreathe Plus Light Resistance Inspiratory Muscle Trainer (green, Wellness model) Ergonomic, soft-touch nose clip (also suitable for swimming) Fabric storage pouch 4 cleansing tablets User manual Precautions: If you have any doubts about the suitability of POWERbreathe, or you have a medical condition, please consult your doctor. Inspiratory muscle training (breathing muscle training), such as training with POWERbreathe, is not recommended for patients with a history of spontaneous pneumothorax (a collapsed lung that was not due to traumatic injury e.g. broken rib), as it may lead to a recurrence of the condition. Following a traumatic pneumothorax and/or broken rib, POWERbreathe should not be used prior to full recovery. Inspiratory muscle training is not suitable for asthma patients who have low symptom perception and who suffer from frequent sever exacerbations. Inspiratory muscle training is not suitable for anyone who has recently experienced a perforated eardrum. Anyone who is under the age of 16 should only use POWERbreathe with supervision from an adult. Buy PowerBreathe Nutrition & Training from Chain Reaction Cycles, the World's Largest Online Bike Store.
PowerBreathe Plus Respiratory TrainerPOWERbreathe Plus - 2nd generation POWERbreathe Inspiratory Muscle Training series (breathing training), with hi-tech ergonomic design, optimised airflow performance and anti-bacterial qualities.POWERbreathe uses the basic principles of resistance training. Just as you might use weights to strengthen your arm muscles, breathing in through POWERbreathe against the light, variable resistance makes your breathing muscles work harder - thereby increasing their strength and endurance. Ideal for people who, because of illness or advancing age, are restricted by shortness of breath.Within a few days of using this drug-free, easy-to-use hand-held device, your breathing muscles will feel stronger; within 3-weeks you'll feel less breathless; and within 4 weeks every-day activities will feel easier.Who can benefit? People with a respiratory condition such as asthma (including exercise-induced), Chronic Obstructive Pulmonary Disease (COPD), bronchitis, cystic fibrosis (also suitable for children aged 10+ under adult supervision) People with a debilitating condition such as heart failure, heart disease, spinal injury People unaccustomed to regular physical exercise Anyone who gets out of breath easily SeniorsFeatures: Drug-free & natural with no side effects or drug interactions Scientifically proven, pressure threshold training technique Calibrated inspiratory load (light resistance) Adjustable 'light' training resistance (up to 10 adjustable training levels) Resistor/training level indicator Fully washable design Anti-bacterial mouthpiece Ergonomic mouthpiece design, suitable for adult & paediatric use Up to 65% improvement in airflow performance (vs. POWERbreathe Classic) Ergonomic grip design Fully integrated load mechanism Use & Care: Simply put the nose-clip on so that it pushes your nostrils together and then breathe in through the POWERbreathe (use a little extra effort than you would to breathe normally), and the device will do the rest. Improvement in breathing efficiency can be seen in as little as 4-weeks. Comes with full instructions. Laboratory proven training regimen: Twice a day simply breathe 30 times through the device against the adjustable resistance. It takes less than 5-minutes. As your breathing muscle strength improves, simply adjust and increase the resistance as you would with any other form of exercise. Within a few days your inspiratory muscles will feel stronger; within 3-weeks you'll feel less breathless; and within 4 weeks activities, exercise and sports will feel easier. Includes: POWERbreathe Plus Light Resistance Inspiratory Muscle Trainer (green, Wellness model) Ergonomic, soft-touch nose clip (also suitable for swimming) Fabric storage pouch 4 cleansing tablets User manual Precautions: If you have any doubts about the suitability of POWERbreathe, or you have a medical condition, please consult your doctor. Inspiratory muscle training (breathing muscle training), such as training with POWERbreathe, is not recommended for patients with a history of spontaneous pneumothorax (a collapsed lung that was not due to traumatic injury e.g. broken rib), as it may lead to a recurrence of the condition. Following a traumatic pneumothorax and/or broken rib, POWERbreathe should not be used prior to full recovery. Inspiratory muscle training is not suitable for asthma patients who have low symptom perception and who suffer from frequent sever exacerbations. Inspiratory muscle training is not suitable for anyone who has recently experienced a perforated eardrum. Anyone who is under the age of 16 should only use POWERbreathe with supervision from an adult. Buy PowerBreathe Nutrition & Training from Chain Reaction Cycles, the World's Largest Online Bike Store.
PowerPod V5 has new sensors, more accurate data recording, and simpler setup A new 24 bit wind sensor, designed and manufactured exclusively for Velocomp, provides better and higher resolution wind measurements A new 24 bit barometric pressure sensor provides more accurate elevation measurement New Firmware 9 (factory installed) uses 24 bit data to deliver better power measurement accuracy New Velocomp app for iOS/Android lets you set up as many as four bikes from your smartphone, without using Isaac software Velocomp app also includes a bike computer screen displaying instantaneous and average power, speed, calories, distance, cadence, and also a graphical display of your zone % FTP All new PowerPod V5 features add to the already-impressive list of PowerPod features and benefits. One Device. All The Data. High accuracy, +/- 2%, both leg measurement Works with any road, mountain, time trial, gravel, and cross bike Other bikes too: tandem, recumbent, folding, you name it! No swapping bike components Box to bike setup in 10 minutes ANT+™ compatibility Transmits power data to many popular iOS/Android cycling apps Records your ride data for analysis in Velocomp Isaac software Simple To Set Up With PowerPod V5 you don't swap-out wheels, cranks or pedals. Installation is incredibly easy: Attach the PowerPod mount to your handlebars (Or with the optional mount, directly beneath your Garmin or Wahoo!) Pair PowerPod V5 to your bike computer's ANT+™ speed or speed/cadence sensor Pair your bike computer or smartphone app to PowerPod V5 Customize your settings with the Velocomp app for iOS/Android Perform a one-time, short out-and-back calibration ride Then, just ride!
Classic 3 piece alloy crank with a square 22mm Chromoly spindle. Dual side pressed pedal inserts. ###section### Product Specs Type:3 Piece Spindle Diameter:22mm Includes BB Bearings:No Weight:TBC ###shogun-image-section###
Reach new goals and explore new roads with a power meter that delivers on accuracy, durability, and reliability. The Quarq DZero DUB Power Meter is paired with the Quarq DUB Crankarms and SRAM’s X-Glide 52/36t chainrings to have the perfect fit for most 10- or 11- speed groupsets. A SRAM DUB Bottom Bracket will be required for installation. Features: Bluetooth low energy technology and ANT+ wireless data transfer MagicZero - automatically checks and recalibrates your power meter as you ride – no need to manually calibrate AxCad -- no cadence magnet required 10K Temperature Compensation Battery -- CR2032, 200-hour battery life, change without tools OmniCal -- swap chainrings without affecting accuracy 2-year warranty IPX7 waterproof rating Accuracy -- within 1.5%, measuring both legs.
Ready for training, this road bike powermeter is equipped with two high-quality carbon crank arms that ensure fantastic stiffness, durability and low weight as you aim to beat your personal performance goals. Quarq has also designed this chassis-only version for compatibility with Shimano Dura-Ace R9100 or Ultegra R8000 chainrings for excellent power delivery and precision on your ride. Thanks to its spider powermeter, this model provides riders with accuracy within 1.5%, measuring both legs for reliable, accurate power analysis. Another highlight is it comes complete with many of Quarq's renowned technologies such as MagicZero, AxCad and OmniCal as well as 10K Temperature Compensation and an IPX7 waterproof rating for reliability and consistency in any weather conditions. Bluetooth and ANT+ Compatible Your riding and training efforts deserve power measurement that reaches the highest standards of accuracy to help you reach personal records. Because without accurate data, you can’t know if you are making the progress you’re aiming for. With Quarq’s DFour power measurement technology that uses Bluetooth and ANT+ connectivity, you’ll have the technology to get real results. Reach new goals and explore new roads with a power meter that delivers on accuracy, durability, and reliability. The Quarq DFour DUB Power Meter is paired with the Quarq DUB Crankarms to pair with your Dura-Ace R9100 or Ultegra R8000 chainrings. A SRAM DUB Bottom Bracket will be required for installation (available separately). Additional Item Top Features: Connectivity: Bluetooth or ANT+ Battery: CR2032 Battery Life: 200-hour battery life, change without tools Waterproof Rating: IPX7 Accuracy: Within 1.5%, measuring both legs Compatible Chainrings: Shimano Dura-Ace R9100 or Ultegra R8000 road chainrings Chainrings Included: No Technologies: DUB: The relationship between bottom bracket spindle and bearing is the core of DUB technology. It’s where stiffness meets durability. Quarq took it a step beyond conventional thinking and made everything simpler—better integrating the relationship between chainring, crank, spindle and bottom bracket. It’s this approach to developing a complete system that equals better drivetrain performance. Connectivity: Bluetooth low energy technology and ANT+ wireless data transfer. MagicZero: Automatically checks and recalibrates your power meter as you ride – no need to manually calibrate. AxCad: No cadence magnet required. Battery: CR2032, 200-hour battery life, change without tools. OmniCal: Swap chainrings without affecting accuracy. Accuracy: Within 1.5%, measuring both legs. 10K Temperature Compensation. IPX7 waterproof rating. Manufacturer's Part Number: 00.3018.292.170 Black 170mm 00.3018.292.172 Black 172.5mm 00.3018.292.175 Black 175mm
Every innovation in Quarq’s next-generation DZero platform is channeled into DFour. It embodies 10 years of Quarq technology advances with new features such as dual Bluetooth low energy and ANT+ wireless data transfer, the new Qalvin BLE app and compatibility with BB30 bottom brackets. Quarq power meters use their patented direct-force technology to precisely measure your physical performance throughout your ride. Their meter is located in the crankset, the heart of the bicycle, and because it gathers data from both legs, and it's located at the precise point where muscle energy is converted to forward movement, the power meter spider is the most accurate place to gather power data. 10K Temperature Compensation Eliminates variables caused by heat and cold to provide an unwavering record of your performance through all conditions. Built to Last An IPX7 waterproof rating, an easy-to replace CR2032 battery, a 2-year warranty, free firmware updates and acclaimed worldwide support. Easy to Use Manual and automatic zeroing make Quarq power meters truly set and forget. The chainrings are replaceable should your bike, discipline or ability change. Qalvin BLE with Bluetooth For iOS and Android. With any phone you can set zero offset, check battery, run diagnostics and update firmware. Free. Other Features DFour also features OmniCal (change chainrings without affecting accuracy) and AxCad (accelerometer cadence – no magnet).
Quarq DZERO Road Power Meter ChainsetFeaturing two high-quality carbon crankarms, this powermeter offers exceptional stiffness, strength and low weight performance on your road bike. Quarq has also equipped this model with two SRAM X-Glide aluminium chainrings for additional durability and precision as you clock up the miles. Designed for compatibility with most 10 speed and 11 speed drivetrains, this powermeter is fitted with a Quarq DZERO DUB spider power meter that delivers accuracy within 1.5%, measuring both legs. Another highlight is it comes complete with many of Quarq's renowned technologies such as MagicZero, AxCad and OmniCal as well as 10K Temperature Compensation and an IPX7 waterproof rating for accuracy and consistency in any weather conditions. DZERO Road Powermeter with X-Glide ChainringsImagine being able to shift smoothly at any time, no matter what. We're talking full-power shifts. Up, down, whatever the road demands. The benefit of X-Glide chainrings is simple, yet, when you think about it, incredibly impactful to the way you ride. Flawless shifting means you'll never again compromise your speed and power in unpredictable road conditions. Quarq precisely paired the different-sized chainrings and redesigned where and how the chain engages with the rings. By aligning the chainring pick-up rivets to the chain pivot pin—rather than the middle of the chain link—you get double the shift opportunities. No more missed shifts, ever. X-Glide puts you in the right gear, right now.Bluetooth and ANT+ CompatibleYour riding and training efforts deserve power measurement that reaches the highest standards of accuracy to help you reach personal records. Because without accurate data, you can't know if you are making the progress you're aiming for. With Quarq's premier DZero power measurement technology that uses Bluetooth and ANT+ connectivity, you'll have the technology to get real results.Reach new goals and explore new roads with a power meter that delivers on accuracy, durability, and reliability. The Quarq DZero DUB Power Meter is paired with the Quarq DUB Crankarms and SRAM's X-Glide 52/36t chainrings to have the perfect fit for most 10- or 11- speed groupsets. A SRAM DUB Bottom Bracket will be required for installation (available separately).Features: Crank Arm Material: Carbon Chainring Material: Aluminium Use: Road Power Meter Type: Spider BCD: 110 Speed: 11 speed Tooth Count: 52/36T Number of Chainrings: 2 BB Spindle Interface: DUB BB Compatibility: All SRAM Road DUB bottom brackets Bottom Bracket Included: No, available separately Guard: No guard Connectivity: Bluetooth or ANT+ Battery: CR2032 Battery Life: 200-hour battery life, change without tools Waterproof Rating: IPX7 Accuracy: Within 1.5%, measuring both legsTechnologies: DUB: The relationship between bottom bracket spindle and bearing is the core of DUB technology. It's where stiffness meets durability. Quarq took it a step beyond conventional thinking and made everything simpler—better integrating the relationship between chainring, crank, spindle and bottom bracket. It's this approach to developing a complete system that equals better drivetrain performance. DZERO: Quarq's next-generation DZero power meter platform is named for the D0 Experiment, one of science's most accurate and innovative projects to detect subatomic particles moving at the speed of light. Connectivity: Bluetooth low energy technology and ANT+ wireless data transfer. MagicZero: Automatically checks and recalibrates your power meter as you ride - no need to manually calibrate. AxCad: No cadence magnet required. Battery: CR2032, 200-hour battery life, change without tools. OmniCal: Swap chainrings without affecting accuracy. Accuracy: Within 1.5%, measuring both legs. 10K Temperature Compensation. IPX7 waterproof rating.Manufacturer's Part Numbers: 00.3018.291.170 Black 52/36T 170mm 00.3018.291.172 Black 52/36T 172.5mm 00.3018.291.175 Black 52/36T 175mmBuy Quarq Components from Chain Reaction Cycles, the World's Largest Online Bike Store.