Extention Jarvis 4 street-trials bike

-> Custom Trialshop.pl upgrade - stronger spokes in classy black with black nipples for ultra stealth!

-> Brake hose installed through steerer tube as standard

Now becoming the core street-trials product in Extention's lineup, the Jarvis features all the goodies street-trials riders have grown to love - thru axles front and rear, a stiff frame and forks, internally routed front brake hose and more. The bike features Extention's fast engaging RAID freehub which gives an effective 165 engagement points at the crank - combined with a powerful, adjustable chain tensioner that takes up any slack in the chain, this is one of the more responsive drivetrains out there. Wheels are built on Extention's A35 rims and combined with kevlar Continental Air King MacAskill tyres can be run tubeless - though this bike does feature inner tubes. The cranks are Extention's proven BB24 system paired with the Storm DUB bashring - a beautiful, lightweight CNC machined integrated 22T setup. This bike is subject to our standard workshop process - faced brake mounts for perfect caliper alignment and faced BB shell for smooth crank operation.

Please note that very minor blemishes around the dropouts may be present. Frames available with grey Extention logo (pictured) or white (as found on forks). If you would like a specific colour drop your request in the comment section when completing your order and we'll try to comply depending on availability.

Due to the nature of packing constraints when shipping bicycles the front tyre will be removed from the wheel. This is standard practice on almost all Extention bikes we ship but be warned that Continental tyres are very tight and will require a bit of skill and good quality composite tyre levers to get onto the rim. If you are not up to the task we can ship the bike in a different box which changes the way the bike will be delivered to you - tyres installed, but rear wheel removed from the frameset.

Frame and fork:

• Extention Jarvis 4 frame, 12mm thru-axle, post mount
• Extention Jarvis 4 1.5" 15mm thru-axle, post mount

Steering:

• Extention Forged, 90mm x 35*
• Extention alloy high riser bars
• Extention sealed headset
• Extention lock-on grips

Drive:

• Extention Forged 7050 BB24 crankset
• Extention Storm 7075 CNC machined 22T bash and sprocket
• Extention 16T CNC sprocket
• Extention nylon platforms
• Extention 3rd gen chain tensioner
• KMC Z1eHX chain

Front wheel:

• Extention 15mm hub, disc
• Extention A35 tubelss ready rim
• Sapim spokes, black
• Sapim Polyax brass nipples
• Continental Air King MacAskill tyre
• Kenda tube, presta valve

Rear wheel:

• Extention RAID 120 engagement point freehub, 142mm body, thru-axle, disc
• Extention A35 tubelss ready rim
• Sapim spokes, black
• Sapim Polyax brass nipples
• Continental Air King MacAskill tyre
• Kenda tube, presta valve

Brakes:

• Magura MT5, MT7, MT Trail SL Carbon brakes
• Magura Storm 180mm rotors
• MT Trail SL Carbon brakes come switched meaning the rear brake uses a 4 pot and front a 2 pot calliper. These brakes are equivalent in performance to the MT7 and MT8 while maintaining lower weight thanks to carbon lever blades.

Weight:

• 10.55kg (Hope)