HF-3 Crankset
HF-3 cranks are the ultimate combination of stiffness, durability and weight savings. Forged from 6061-T6 aluminum, the hollow crank arms spin on a massive 30-millimeter 7075 aluminum spindle permanently fitted into the non-drive arm.
Specs
Crank Arm Material – 6061 Aluminum
Spindle Material – 7075 Aluminum
Spindle Diameter – 30mm
Weight – 775 grams (175mm). 820 grams w/ included spider
Bolt Circle Diameter (BCD) – 104mm, or Direct Mount
Chainline – 43 ± 1.5
Q-Factor – 170
Additional Info –
Promax EX-2 30mm bottom bracket with wave washer sold separately
Use of a wave washer recommended for proper bottom bracket spacing and bearing preload
104mm BCD spider included, 6061-T6 Aluminum
Compatible Promax Direct Mount Chainrings are sold separately, which allow you to eliminate your spider for ~68 grams of total weight savings
HF-3 Cranks are not compatible with CK-1 spiders
Pedal washers included (required)
Spindle Bolt Installation Torque: 35-40Nm
Spider/Chainring Installation Torque: 6-9Nm
Part Numbers
170mm • CK21-030HF170-BK
172.5mm • CK21-030HF172-BK
175mm • CK21-030HF175-BK
MSRP
$299.99
