Shimano ZEE FC-M640 68/73 mm Crankset

Shimano ZEE crankset FC-M640 - for 68 and 73 mm bottom bracket widths

The Shimano ZEE FC-M640 crankset fits into bottom brackets with 68 or 73 mm shell widths. With its heavy-duty steel axle and steel pedal inserts, it is an indestructible partner for freeriders and downhill specialists. As a 4-arm single crank for Shimano 10-speed drivetrains, the FC-M640 comes with a 36-tooth chainring (104 mm bolt circle) and a rigid 2-piece design with two thick-walled aluminium crankarms.

Specifications:

Application: Freeride, Downhill
Compatibility: Shimano 1x10-speed
Chainring Mount: 104 mm bolt circle diameter, 4-arm

Technical Information:

Series: ZEE M640
Crankarm Material: aluminium
Chainring Material: aluminium
Axle Material: steel
Gradation: 36 teeth
Crankarm Length: 165.0 mm, 170.0 mm, 175.0 mm
Chainline: 50.4 mm
Q-Factor: 174.7 mm
Compatible BSA Shell Width: 68 mm, 73 mm
Bottom Bracket: SM-BB52 Hollowtech II (SM-BB71-41A Pressfit optional)
Recommended Chain: HG-X 10-speed (e.g. CN-HG95)

Features:

- strong, thick-walled 2-piece crankarm
- resilient steel axle
- steel pedal insert
- painted crankarms, anodised chainrings
- stainless steel chainring bolts
- compatible with Press-Fit bottom brackets
- for 135 mm and 142 mm over locknut dimensions
- not incl. chain guard

Technology:

2-Piece
Integration of crankarm and inner bearing. Increased rigidity with a lighter weight. The axle bearings are far apart: the rigidity increases and the strength of the biker is effectively transferred. Precision bearing: low maintenance effort and simplified mount.

Manufacturer Part Numbers:

165.0 mm 36 tooth: E-FCM640AA6X
170.0 mm 36 tooth: E-FCM640CA6X
175.0 mm 36 tooth: E-FCM640EA6X

Contents:

- 1 x Shimano ZEE FC-M640 crankset (36 tooth)
- 1 x Shimano bottom bracket
- 1 x crank bolt
- 3 x bottom bracket spacers for 68/73 bottom bracket shells