The Premium Gnarstar is a CNC 7075 machined T6 alloy chainwheel with a multi-level 10 spoke design and laser etched Premium logos. Compatible with 19mm and 22mm crank axles ###section### Product Specs TYPE: Bolt On MATERIAL: Alloy WEIGHT: 78g
The 14" Alpha One from Prevelo is the smallest pedal bike in the Prevelo line up and fits most 3 to 4.5 year olds. It's packed with features to get little riders off to the right start.Prevelo confidence inspiring low and narrow geometry. Prevelo geometry keeps the rider low, balanced and in controlLightweight 6061 aluminium frame with custom formed tubingLightweight aluminium alloy fork with chromoly steererTektro front and rear v-brakes with small reach brake leversFront hub with low profile rounded hex bolts and no harsh edged nuts for little legs to knock againstThree piece crank with squared taper cartridge bearing bottom bracket and ultra narrow Q factorDouble chain wheel guardCustom made cranks. All Prevelo cranks are sized specifically for each model bike, down to the millimetre95% assembled. Just install the handlebar, seatpost and pedalsPLEASE NOTE: The specification of the bike may be subject to change at any time and may differ from the images or specification of the bike shown here. If you would like to know any specific details please contact our sales team at Tweeks Cycles.Kid Optimised Crank - Prevelo crank lengths are custom sized for each size bike to make sure little riders have optimum pedal ergonomics. And they have ultra-narrow Q-factors to match the narrow hips of young cyclists. If that sounds like technical mumbo jumbo, here's the point - Prevelo cranks will help make small riders more comfortable and efficient on their bike.BOXT Rear Stays and Forged Dropouts - Kids are going to put their bikes through the ringer, so Prevelo bikes are built kid tough with robust BOXT rear chain stays and seat stays, and BMX track style forged dropouts that shroud the rear axle.Confidence Inspiring Geometry - The Alpha One features Prevelo's signature confidence inspiring geometry. Prevelo geometry utilizes a low bottom bracket that lowers the centre of gravity of the bike and rider, making for a more agile and confident ride.Kid Friendly Hubs - The hubs are equipped with rounded axle bolts that minimize hard edges. And because kids are going to run their bikes through muck, the hubs have rubber seals to keep out dirt and grime.Kid Optimised Cockpit - This is where little riders command these steed. It's decked out with ultra small diameter grips and short reach brake levers that are optimized for small hands.Low Stand Over Height - A low minimum seat height and dropped top tube help accommodate the smallest riders.Specifications:Weight (including pedals) - 14.4 lbs / 6.5 kg (13.45 lbs / 6.1 kg with freewheel kit installed)Minimum Saddle Height - 15.6 in / 397 mmMaximum Saddle Height - 17.5 in / 445 mmBottom Bracket Height - 6.7 in / 170 mmGain Ratio - 3.7Stand over (ground to top of top tube) - 14in / 355.6mmSize Chart:
The 16" Alpha Two is the perfect bike for 4 to 6 year olds whether they are just learning to ride or are mastering the trails.Ships with a bonus short seat post for additional height adjustment. A short seat post and the tool required to change seat post are included!Prevelo confidence inspiring low and narrow geometry. Prevelo geometry keeps the rider low, balanced and in controlLightweight 6061 aluminium frame with custom formed tubingLightweight aluminium alloy fork with chromoly steererTektro front and rear v-brakes with small reach brake leversFront and rear hubs with low profile rounded hex bolts and no harsh edged nuts for little legs to knock againstThree piece crank with squared taper cartridge bearing bottom bracket and ultra narrow Q factorDouble chain wheel guardCustom made cranks. All Prevelo cranks are sized specifically for each model bike, down to the millimetre95% assembled. Just install the handlebar, seatpost and pedalsKid Optimised Crank - Prevelo crank lengths are custom sized for each size bike to make sure little riders have optimum pedal ergonomics. And they have ultra-narrow Q-factors to match the narrow hips of young cyclists. If that sounds like technical mumbo jumbo, here's the point - Prevelo cranks will help make small riders more comfortable and efficient on their bike.BOXT Rear Stays and Forged Dropouts - Kids are going to put their bikes through the ringer, so Prevelo bikes are built kid tough with robust BOXT rear chain stays and seat stays, and BMX track style forged dropouts that completely shroud the rear axle bolts.Confidence Inspiring Geometry - The Alpha Two features Prevelo's signature confidence inspiring geometry. Prevelo geometry utilizes a low bottom bracket that lowers the centre of gravity of the bike and rider, making for a more agile and confident ride.Kid Friendly Hubs - The hubs are equipped with rounded axle bolts that minimize hard edges. And because kids are going to run their bikes through muck, the hubs have rubber seals to keep out dirt and grime.Kid Optimised Cockpit - This is where little riders command their steed. It's decked out with ultra small diameter grips and short reach brake levers that are optimized for small hands.Low Stand Over Height - A low minimum seat height and dropped top tube help accommodate the smallest riders.Specifications:Weight (including pedals): 14.5 lbs / 6.6 kgMinimum Saddle Height : 17.7 in / 450 mm*Maximum Saddle Height: 25.0 in / 635 mmBottom Bracket Height: 7.2 in / 182 mmGain Ratio: 3.8Stand over: (ground to top of top tube) 15 in / 381mm*The Alpha Two includes a bonus short seat post that allows the saddle height to be lowered to 17.7 inches. Standard 300mm seat post height range: 21 in (535 mm) to 25 in (640 mm). Short 200mm seat post height range: 17.7 in (450 mm) to 21 in (535 mm).PLEASE NOTE: The specification of the bike may be subject to change at any time and may differ from the images or specification of the bike shown here. If you would like to know any specific details please contact our sales team at Tweeks Cycles.Size Chart:
The 20" Alpha Three from Prevelo is their smallest geared bike. The new 9-speed Microshift drive train and 11-36T wide range gearing is the real deal and gives growing riders a truly usable gear range.Prevelo confidence inspiring low and narrow geometry. Prevelo geometry keeps the rider low, balanced and in controlLightweight 6061 aluminium frame with custom formed tubingLightweight aluminium alloy fork with chromoly steererTektro front and rear v-brakesLightweight Allen head front and rear wheel skewers for secure wheel installationThree piece crank with squared taper cartridge bearing bottom bracket and ultra narrow Q factorCustom made cranks. All Prevelo cranks are sized specifically for each model bike, down to the millimetreNEW Microshift 9-speed drivetrain. Uses a shorter pulley cage without comprising gear ratio width. Because kids bikes have small wheel diameters, rear derailleurs on kids bikes hang low and close to the ground. The Prevelo Alpha bikes use smaller cage derailleurs to keep things high and away from the groundMicroshift Trigger Shifters. Small hands have a hard time using twist shifters. We use reliable silky smooth thumb shifters. They are easy for small hands to operate and operate just like shifters on high performance bikes95% assembled. Just install the handlebar, seatpost, front wheel and pedalsPLEASE NOTE: The specification of the bike may be subject to change at any time and may differ from the images or specification of the bike shown here. If you would like to know any specific details please contact our sales team at Tweeks Cycles.Kid Optimised Crank - Prevelo crank lengths are custom sized for each size bike to make sure little riders have optimum pedal ergonomics. And they have ultra-narrow Q-factors to match the narrow hips of young cyclists. If that sounds like technical mumbo jumbo, here's the point - Prevelo cranks will help make small riders more comfortable and efficient on their bike.Confidence Inspiring Geometry - The Alpha Two features Prevelo's signature confidence inspiring geometry. Prevelo geometry utilizes a low bottom bracket that lowers the centre of gravity of the bike and rider, making for a more agile and confident ride.9 Speed Microshift Drivetrain with Wide Span Gearing - 9-speed Microshift drive train and 11-36T wide range gearing is the real deal and gives growing riders truly usable and class leading, 327% gear range. Kids are going to be efficient on the flats and have the leverage of low gears available to help make it up tough hills.Kid Optimised Cockpit - This is where little riders command their steed. It's decked out with ultra-thin grips and short reach brake levers that are optimized for small hands. The Microshift shifter is operated with two easy to operate thumb levers.Specifications:Weight (including pedals): 18.9 lbs / 8.6kgMinimum Saddle Height : 20.7 in / 525mmMaximum Saddle Height: 25.5 in / 648mmBottom Bracket Height: 8.1 in / 205mmGain Ratio: 1.9 - 6.7Stand Over: (ground to top of top tube) 17.5 in / 444.5mmSize Chart:
The 24" Alpha Four features a new 9-speed Microshift drive train. The 11-36T wide range gearing is the real deal and gives growing riders truly usable gear range.Prevelo confidence inspiring low and narrow geometry. Prevelo geometry keeps the rider low, balanced and in controlLightweight 6061 aluminium frame with custom formed tubingLightweight aluminium alloy fork with chromoly steererTektro front and rear v-brakesLightweight Allen head front and rear wheel skewers for secure wheel installationThree piece crank with squared taper bottom cartridge bearing bottom bracket and ultra narrow Q factorCustom made cranks. All Prevelo cranks are sized specifically for each model bike, down to the millimetreNEW Microshift 9-speed drivetrain. Uses a shorter pulley cage without comprising gear ratio width. Because kids bikes have small wheel diameters, rear derailleurs on kids bikes hang low and close to the ground. The Prevelo Alpha bikes use smaller cage derailleurs to keep things high and away from the groundMicroshift Trigger Shifters. Small hands have a hard time using twist shifters. We use reliable silky smooth thumb shifters. They are easy for small hands to operate and operate just like shifters on high performance bikesReplaceable derailleur hanger. If the derailleur takes a hard hit, the hanger can be replaced without repair to the frame11-36T wide span gearing gives riders plenty of range to spin up tough hills95% assembled. Just install the handlebar, seatpost, front wheel and pedalsPLEASE NOTE: The specification of the bike may be subject to change at any time and may differ from the images or specification of the bike shown here. If you would like to know any specific details please contact our sales team at Tweeks Cycles.Kids Optimised Crank - Prevelo crank lengths are custom sized for each size bike to make sure little riders have optimum pedal ergonomics. And they have ultra-narrow Q-factors to match the narrow hips of young cyclists. If that sounds like technical mumbo jumbo, here's the point - Prevelo cranks will help make small riders more comfortable and efficient on their bike.Confidence Inspiring Geometry - The Alpha Four features Prevelo's signature confidence inspiring geometry. Prevelo geometry utilizes a low bottom bracket that lowers the centre of gravity of the bike and rider, making for a more agile and confident ride.9 Speed Microshift Drivetrain with Wide Span Gearing - 9-speed Microshift drive train and 11-36T wide range gearing is the real deal and gives growing riders truly usable and class leading, 327% gear range. Kids are going to be efficient on the flats and have the leverage of low gears available to help make it up tough hills.Kid Optimised Cockpit - This is where little riders command their steed. It's decked out with ultra thin grips and short reach brake levers that are optimized for small hands. The Microshift shifter is operated with two easy to operate thumb levers.Specifications:Weight (including pedals): 21.2lbs / 9.6kgMinimum Saddle Height: 25.8in / 655mmMaximum Saddle Height: 31.2in / 792mmBottom Bracket Height: 9.9in / 252mmGain Ratio: 1.9 - 6.8Stand over (ground to top of top tube): 22in / 558.8mmSize Chart:
The Prevelo Zulu Two packs high performance mountain bike features into a tiny 16-inch wheel size package. Every component is the real deal and is carefully chosen to provide the best performance and fit for young riders ready to tear up the trails.Prevelo confidence inspiring low and narrow geometry. Prevelo geometry keeps the rider low, balanced and in controlAvailable with a lightweight 60mm travel air fork with HM Carbon Fibre/AL6061 lowers & AL7050 hard anodized Ø30mm stanchions and adjustable rebound, lockout and compressionShips with a bonus short seat post for additional height adjustment. Includes the tool required to change seat postLightweight 6061 aluminium frame with custom formed tubing, BOXT rear stays and forged rear dropoutsLightweight aluminium alloy fork with chromoly steererRadius front and rear hydraulic disc brakes with reach adjustable short leversThree piece crank with squared taper cartridge bearing bottom bracket and ultra narrow Q factorCustom made cranks. All Prevelo cranks are sized specifically for each model bike, down to the millimetreDouble alloy chain wheel guard95% assembled. Just install the handlebar, seatpost, and pedalsPLEASE NOTE: The specification of the bike may be subject to change at any time and may differ from the images or specification of the bike shown here. If you would like to know any specific details please contact our sales team at Tweeks Cycles.Hydraulic Disc Brakes - Powerful hydraulic disc brakes give kids plenty of stopping power on long descentsKid Optimised Cockpit - This is where little riders command these steed. It's decked out with ultra small diameter grips and short reach brake levers that are optimized for small hands.Confidence Inspiring Trail Geometry - The Zulu Two features Prevelo's signature confidence inspiring geometry. Prevelo geometry utilizes a low bottom bracket that lowers the centre of gravity of the bike and rider, making for a more agile and confident ride. The slack front end makes the bike forgiving to young trail riders experimenting with tough terrain.Kids Optimised Crank - Prevelo crank lengths are custom sized for each size bike to make sure little riders have optimum pedal ergonomics. And they have ultra-narrow Q-factors to match the narrow hips of young cyclists. If that sounds like technical mumbo jumbo, here's the point - Prevelo cranks will help make small riders more comfortable and efficient on their bike.BOXT Rear Stays and Forged Dropouts - Kids are going to put their bikes through the ringer, so Prevelo bikes are built kid tough with robust BOXT rear chain stays and seat stays, and BMX track style forged dropouts that shroud the rear axle.Specifications:Version: Zulu TwoFork: RigidWeight (without pedals): 17.15lb / 7.7kgMinimum Saddle Height : 18.1in / 460mmMaximum Saddle Height: 25in / 635mmBottom Bracket Height: 7.3in / 185mmGain Ratio: 3.8Stand over (ground to top of top tube): 16in / 406.4mmSize Chart:
The Prevelo Zulu Two packs high performance mountain bike features into a tiny 16-inch wheel size package. Every component is the real deal and is carefully chosen to provide the best performance and fit for young riders ready to tear up the trails.Prevelo confidence inspiring low and narrow geometry. Prevelo geometry keeps the rider low, balanced and in controlAvailable with a lightweight 60mm travel air fork with HM Carbon Fibre/AL6061 lowers & AL7050 hard anodized Ø30mm stanchions and adjustable rebound, lockout and compressionShips with a bonus short seat post for additional height adjustment. Includes the tool required to change seat postLightweight 6061 aluminium frame with custom formed tubing, BOXT rear stays and forged rear dropoutsLightweight aluminium alloy fork with chromoly steererRadius front and rear hydraulic disc brakes with reach adjustable short leversThree piece crank with squared taper cartridge bearing bottom bracket and ultra narrow Q factorCustom made cranks. All Prevelo cranks are sized specifically for each model bike, down to the millimetreDouble alloy chain wheel guard95% assembled. Just install the handlebar, seatpost, and pedalsPLEASE NOTE: The specification of the bike may be subject to change at any time and may differ from the images or specification of the bike shown here. If you would like to know any specific details please contact our sales team at Tweeks Cycles.Hydraulic Disc Brakes - Powerful hydraulic disc brakes give kids plenty of stopping power on long descents.Kid Optimised Cockpit - This is where little riders command these steed. It's decked out with ultra small diameter grips and short reach brake levers that are optimized for small hands.Confidence Inspiring Trail Geometry - The Zulu One features Prevelo's signature confidence inspiring trail geometry. Prevelo geometry utilizes a low bottom bracket that lowers the centre of gravity of the bike and rider, making for a more agile and confident ride. The slack front end makes the bike forgiving to young trail riders experimenting with tough terrain.Kid Optimised Crank - Prevelo crank lengths are custom sized for each size bike to make sure little riders have optimum pedal ergonomics. And they have ultra-narrow Q-factors to match the narrow hips of young cyclists. If that sounds like technical mumbo jumbo, here's the point - Prevelo cranks will help make small riders more comfortable and efficient on their bike.BOXT Rear Stays and Forged Dropouts - Kids are going to put their bikes through the ringer, so Prevelo bikes are built kid tough with robust BOXT rear chain stays and seat stays, and BMX track style forged dropouts that shroud the rear axle.Air Suspension Fork - The Zulu Two Heir comes equipped with the Heir 16 fork with 60mm of travel, adjustable rebound, lockout and compression.Specifications:Version: Zulu Two HEIRFork: HEIR Air forkWeight: (without pedals) 17.95lb / 8.1kgMinimum Saddle Height : 18.1in / 460mmMaximum Saddle Height: 25in / 635mmBottom Bracket Height: 7.3in / 185mmGain Ratio: 3.8Size Chart:
The Prevelo Zulu Three packs high performance mountain bike features into a 20-inch wheel size package. Every component is the real deal and is carefully chosen to provide the best performance and fit for young riders ready to tear up the trails.Prevelo confidence inspiring low and narrow geometry. Prevelo geometry keeps the rider low, balanced and in controlZulu specific slack head tube angle and short chain stays keeps the bike controlled over rough terrainSpinner 300 20 AIR suspension fork- 80mm travel - Ø30mm Stanchion - lockout and adjustable compressionLightweight aluminium frame with custom formed 6061 triple- butted tubing and TRAPT downtube profileStealth dropper post readyAvailable with tubeless ready wheels and tyresRear hub with 12mm Thru-AxleRadius front and rear hydraulic disc brakesSRAM GX 10-speed drivetrain. This 10-speed derailleur has a short cage. Because of the small wheel diameter on 20-in bikes, rear derailleurs on 20-inch bikes hang low and close to the ground. The Prevelo Zulu Three uses a high performance short cage derailleurs to keep things high and away from the ground. The derailleur also features a clutch that can be turned on with the flip of a switch to eliminate derailleur bounce over hard terrain and reduce chain drops11-36T wide span gearing gives riders plenty of range to spin up tough hillsKid engineered direct mount cranks. All Prevelo cranks are sized specifically for each model bike, down to the millimetre95% assembled. Just install the handlebar, seatpost, front wheel, and pedalsPLEASE NOTE: The specification of the bike may be subject to change at any time and may differ from the images or specification of the bike shown here. If you would like to know any specific details please contact our sales team at Tweeks Cycles.Kid Optimised Crank - Prevelo crank lengths are custom sized for each size bike to make sure little riders have optimum pedal ergonomics. And they have ultra-narrow Q-factors to match the narrow hips of young cyclists. If that sounds like technical mumbo jumbo, here's the point - Prevelo cranks will help make small riders more comfortable and efficient on their bike.Confidence Inspiring Trail Geometry - The Zulu Three features Prevelo's signature confidence inspiring geometry. Prevelo geometry utilizes a low bottom bracket that lowers the centre of gravity of the bike and rider, making for a more agile and confident ride. The slack front end makes the bike forgiving to young trail riders experimenting with tough terrain.Microshift Advent Super Short Drivetrain - The Zulu Three features the new Microshift Advent Super Short derailleur. The super short cage provides ample ground clearance for small wheels, while simultaneously providing best in class gear range. The clutch helps minimize chain drop while still providing crisp, accurate shifts.Tubeless Ready Tyres and Rims - All Zulu Threes are equipped with tubeless ready tyres and rims, so you can ditch the tube, reduce flats, and get a more comfortable grippier ride. Bikes ship with tubes installed and will need to be setup tubeless by you or your mechanic.Specifications:Weight (with pedals and tubes): 22.96lbs / 10.41kgMinimum Saddle Height : 22.8in / 580mmMaximum Saddle Height: 725mm / 28.5inBottom Bracket Height: 9.8in / 248mmGain Ratio: 1.88 - 6.16Stand over (ground to top of top tube): 21.5" / 564.1mmSize Chart:
The Prevelo Zulu One packs high performance mountain bike features into a tiny 14-inch wheel size package. Every component is the real deal and is carefully chosen to provide the best performance and fit for young riders ready to tear up the trails.Prevelo confidence inspiring low and narrow geometry. Prevelo geometry keeps the rider low, balanced and in controlLightweight 6061 aluminium frame with custom formed tubing and BOXT rear stays and forged rear dropoutsLightweight aluminium alloy fork with chromoly steererRadius front and rear hydraulic disc brakes with reach adjustable short leversThree piece crank with squared taper cartridge bearing bottom bracket and ultra narrow Q factorCustom made cranks. All Prevelo cranks are sized specifically for each model bike, down to the millimetreDouble alloy chain wheel guard95% assembled. Just install the handlebar, seatpost, and pedalsPLEASE NOTE: The specification of the bike may be subject to change at any time and may differ from the images or specification of the bike shown here. If you would like to know any specific details please contact our sales team at Tweeks Cycles.Hydraulic Disc Brakes - Powerful hydraulic disc brakes give kids plenty of stopping power on long descentsKid Optimised Cockpit - This is where little riders command these steed. It's decked out with ultra small diameter grips and short reach brake levers that are optimized for small hands.Confidence Inspiring Trail Geometry - The Zulu One features Prevelo's signature confidence inspiring geometry. Prevelo geometry utilizes a low bottom bracket that lowers the centre of gravity of the bike and rider, making for a more agile and confident ride. The slack front end makes the bike forgiving to young trail riders experimenting with tough terrain.Kids Optimised Crank - Prevelo crank lengths are custom sized for each size bike to make sure little riders have optimum pedal ergonomics. And they have ultra-narrow Q-factors to match the narrow hips of young cyclists. If that sounds like technical mumbo jumbo, here's the point - Prevelo cranks will help make small riders more comfortable and efficient on their bike.BOXT Rear Stays and Forged Dropouts - Kids are going to put their bikes through the ringer, so Prevelo bikes are built kid tough with robust BOXT rear chain stays and seat stays, and BMX track style forged dropouts that shroud the rear axle.Specifications:Weight (without pedals): 15.9lbs / 7.2kgMinimum Saddle Height: 16in / 406mmMaximum Saddle Height: 18.1in / 460mmBottom Bracket Height: 7.1in / 182mmGain Ratio: 3.7Stand over (ground to top of top tube): 14.5in / 368.3mmSize Chart:
The Presta Tubeless Valves are very simple to use and sit easily in all Presta valve type rims, and thanks to the Pressure Release Valve Stem Nut, which prevents the build-up of pressure in the rim cavity, the threat of accidental rim damage during inflation is eliminated. Please note: The Pressure Release Valve Stem Nuts have been designed to allow the air to escape if it breaches the tubeless tape, if you notice air escaping through the valve, your tubeless tape has not been correctly installed.
When the tubeless seal between the tyre’s air chamber and the rim’s cavity is breached, air will pass through and pressure will build up in the inner chamber, the Pressure Release Valve Stem Nut gives the air an escape route preventing damage to your rim. When installed, air escaping from the valve stem, indicates a compromised tubeless seal. Recommended not only for all Prime tubeless wheels but for all other tubeless wheels.
Prime Presta Tubeless Valves (Pair)Giving your tubeless tyre setup the best inflation experience possible, this pair of Presta valves allows for maximum airflow and minimum fuss as you achieve your optimum pressure. Easy to install, these valves sit flush in Presta-compatible rims and feature a Pressure Release Valve Stem Nut to keep your inflation on point and to prevent accidental rim damage. Features: Easy installation Removable valve core Pressure Release Valve Stem Nuts Accept high-volume airflow Sold as a pair Buy Prime Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.