JCOB

ALLOY GXP SHORTCRANKS

$289.95

Chainrings

34/50 (Compact) 36/52 (Mid-Compact) 39/53 (Standard)

Crank Length

145mm 155mm 160mm 165mm

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Our Alloy Short Cranks are a John Cobb engineered product designed to improve speed and comfort on the bike for all athletes. These hot forged alloy cranks have a GXP style axle (22/24mm) that are easy to install and work well with all road frame bottom bracket standards. They are available in compact, mid-compact and standard options and come in 4 different crank arm lengths 145mm, 155 mm, 160 mm or 165 mm.

IMPORTANT NOTE:

Trek BB90 frames require the use of a BB Infinite BB90 bottom bracket with Cobb Cranks. Any use of another bottom bracket in a Trek BB90 frame with Cobb Cranks will void the warranty. Link to bottom bracket below:

https://speedandcomfort.com/collections/bottom-brackets-2/products/bb-90

WEIGHT	770 g
POWER METER COMPATIBLE	No
CRANK LENGTHS	145, 155, 160, 165, 170 mm
CHAINRING BOLT PATTERNS	5 X 110 mm, 5 X 130 mm
INNER CHAINRING SIZES	34 X 110 mm, 36 X 110 mm, 39 X130 mm
OUTER CHAINRING SIZES	50 X 110 mm, 52 X 110 mm, 53 X 130 mm
CRANK SPINDLE	ROAD GXP 24/22 mm
DRIVETRAIN COMPATIBLE	SHIMANO 10/11, SRAM 10/11, CAMPY 10/11
MATERIAL	FORGED ALLOY
CHAINLINE	42 TO INNER CHAINRING