SRM Octalink Crankarms

£308.33
Crankarm Option: Short Armed

Bringing maximum aerodynamics to your SRM Octalink (Track Science) powermeter through a narrower Q factor, CFD optimised crankarm profile and adjustable length crankarms.

Available in both short and long versions, allowing adjustment in 2.5mm increments between 145-160mm and 160-175mm respectively.

If required additional pedal insert sizes are available separately.

Product Description

The hugely popular SRM Octalink (Track Science) is a commonly used track crank. With a Q factor of 141mm; our Cratus SRM crank arms reduce this by 12mm. Reducing the Q factor to 129mm.

Manufactured from 7075-T6 aluminium, anodised black and subtly laser etched with WattShop branding.

These crankarms are only compatible Octalink bottom brackets. They are not compatible with the SRM Origin spindles.

Additional pedal insert lengths can be purchased separately.
Technical Specifications

TEST DATA

The 12mm reduction in Q factor equates to a rider dependent saving of 0.0012 to 0.0024m^2. Assuming a standard air density of 1.225kg/m^3 this results in a saving of:
- At 50kph = 2-4w
- At 60kph = 3.5-7w

WEIGHT

- 160-175mm Arms = 575g
- Pedal Inserts (inc plates) = 35g/pair

HARDWARE

- DS & NDS crank arms
- 1x Cover piece (for rechargeable spider version)
- 1x M4x6mm low cap head bolt
- 1x pair of pedal inserts and plates
Crankarm Option: Short Armed