The Alpha RoS 2 Jacket from Castelli is the ultimate winter jacket bringing warmth, high breathability, and protection against the rain along with a soft and comfortable fit.The exterior of the jacket is made from GORE-TEX INFINIUM™ WINDSTOPPER® fabric. The lightweight fabric has a unique membrane that delivers the triple crown of being completely windproof, highly breathable, and water repellent, while offering insulation.Minimal seaming and seam sealed shoulders eliminate points where moisture can enter the jacket when you are venturing through mist, wet roads, and even incessant light rain.The unique dual-layer construction of the Alpha is where its insulating qualities really excel. Underneath the exterior layer, the Alpha jacket has an internal vest that hugs close to your body. This offers insulation suitable down to -5°C, and it also means you can regulate your temperature with ease. You can open the external layer to allow airflow into the jacket and evacuate moisture without sacrificing insulation and exposing your body to wind chill.A double-layer cuff integrates with winter gloves and a lie-flat waist hugs close to the body to prevent cold from entering at the jacket’s openings.The stretch fabric is in an updated pattern with a narrower panel between the shoulders and a wider front that makes for a close-to-body fit that minimises flapping and better reflects the shape of your body on the bike. The new cut accommodates a wide range of body types and positions on the bike. Key Features: GORE-TEX INFINIUM™ WINDSTOPPER® 150 fabric. Highly breathable wind protection and effective rain protection,Minimal seaming with seam sealed shoulders reduces chances for water to enter through stitching,Double-layer Alpha construction separates insulating layer from the wind/water external barrier to let you better regulate ventilation,Water-resistant YKK® Vislon® zipper slides easily,Raw-edge waist with silicone gripper lies flat and seals out wind,Double-layer cuff integrates with glove to prevent cold wind and water entering,Stretch fabrics with advance patterning for excellent close to body fit,Back ventilation,3 rear pockets with reflective laser-cut drain holes,Zippered secure side pocket for valuables,-5° – 10°C / 23° – 50°F,Weight: 525g (Large),.
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 Alpha MC Studio Jacket takes Castelli’s favourite winter cycling jacket the Alpha RoS but transforms it into a casual version. Borrowing all the same technology and fabrics the Alpha MC provides the same deep winter protection as its on bike sibling.The exterior of the jacket is made from GORE-TEX INFINIUM™ WINDSTOPPER® fabric. The lightweight fabric has a unique membrane that delivers the triple crown of being completely windproof, highly breathable, and water repellent, while offering insulation. Minimal seaming and seam sealed shoulders eliminate points where moisture can enter the jacket.The signature Alpha double-layer construction provides superb insulation with PrimaLoft® synthetic down and a nylon liner that fits over other layers.Just like Castelli’s on-bike kit, all the details are there. A YKK® Vislon® zip makes for easy opening and closing. A raw-cut edge waist helps create a seal blocking out any wind, as does the new double-layer cuff design. The usual 3 rear pockets are traded for two front pockets as well as an inner chest pocket. A hood completes the jacket so you can be as warm as possible making your way to the start line, or kick starting your recovery. Key Features: Castelli’s deep winter Alpha RoS cycling jacket but in a casual design,GORE-TEX™ WINDSTOPPER® 150 fabric for wind protection with high breathability and effective rain protection,Minimal seams reduce chance of water entering the jacket,Double-layer construction with PrimaLoft® synthetic down insulation and nylon liner that slides easily over other layers,YKK® Vislon® zipper for easy regulation of airflow,Raw-edge waist with silicone gripper lies flat and seals out wind,Double-layer cuff integrates with glove to prevent cold wind or water from entering,2 front pockets and additional inner chest pocket,Integrated hood with draw-cord closure,.
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: