New to Tarty Bikes, the Extention Alter 24" Frame Kit, now available in Pearlescent Blue colour!
- High quality 24" street frame from Extention!
- Compatible with 2.5" tyres and features 142 x 12mm rear axle spacing.
- Supplied with headset, tensioner, axles and seat clamp.
- Threaded fork steerer tube for internal front brake routing!
Extention Alter 24" Frame Kit
- The new 24" street trials frame kit from Extention!
- A completely brand-new design for 2022 developed for the most demanding street riders.
- Featuring a tapered head tube, 142 x 12mm rear axle and 15 x 100mm front axle and clearance for 2.5" tyres.
- CNC machined one piece BB yoke, dropouts and brake mounts for increased strength in these key areas.
- High quality 6061 hydro-formed, T6 heat treated aluminium tube set.
- Square rear drop out tubing for maximum stiffness and weld area whilst allowing better ankle clearance.
- 180mm position Post Mount disc mount on the fork and frame allows the use of 180mm rotors without adaptors.
- Internal headset, with a 1.5" lower cup allowing the use of a tapered steerer tube fork.
- Euro style (threaded) 73mm bottom bracket features a 1.37" x 24tpi thread suitable for use with any 73mm shell compatible threaded bottom bracket we stock.
Please note: the BB shell is not faced. You can fit a BB without facing this part of the frame but we recommend purchasing a facing service here. Brake mounts are already faced.
- 27.2mm seatpost diameter. Frame is supplied with a bolt up aluminium clamp.
- Custom CNC Extention chain tensioner allows the rear wheel to be removed without having to loosen the tensioner first. The tensioner also only has a cage on one side, meaning the chain can be put on and taken off without having to split and rejoin it!
Alter 24" fork
- Threaded steerer with screw in top cap allows for steerer tube routing of the front brake line.
- CNC machine, butted, aluminium steerer tube (190mm long) has massively increased wall thickness at the fork crown for increased strength .
- Chunky fork legs combined with CNC drop outs give high levels of stiffness, ideal for accuracy and high load moves like taps and hooks.
- Dropouts feature a cut away to guide the hub axle into place for easier wheel fitting and use a replaceable axle nut.
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Frame kit only available in Maroon Red and Pearlescent Blue.
Full kit includes:
Extention Alter 24" Frame
Extention Alter 24" Forks
Extention Sealed Headset & Top Cap
Extention custom CNC chain tensioner
15mm and 12mm axles
Weights:
- Total frame kit weight as pictured (Frame, fork, rear and front axle, tensioner, headset, seat clamp and top cap): 3.57kg
Geometry:
- Wheelbase: 990mm -
Extention lists the wheelbase as 975mm and this is printed on the frame, but our measurement is 15mm longer
- Chainstay length: 360mm
- BB Height: +17.5mm
- Head Angle: 74°
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Reach: 460mm
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Stack: 487mm
Compatibility
- Headset type:
Internal Top Cup, 1-1/8"
EC56/40 Lower Cup, 1-1.5"
- Bottom bracket type: Screw-in, 73mm shell width
- Dropout spacing: Frame - 142mm / Fork 100mm
- Brake mount type: +20mm Post Disc Mount
- Bashguard type: n/a - requires a bashring
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Technical Info
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