• Three-piece design
• 29mm crank spindle diameter
• Aluminum pre-loader
• Available in three lengths: 155mm, 160mm, 165mm
• Machined from 7075 T6 aluminum
• Anodized matte black or chrome finish
• SRAM 8 bolt direct mount compatible only 
• Chainring Not included
• Compatible with Title CR1 spindle
• Compatible with SRAM DUB 29mm bottom brackets only
  
  

CHAIN COMPATIBILITY BY CHAINRING:

SRAM T-Type = Compatible with SRAM T-Type 12-speed drivetrains only

Shimano HG 12 = Compatible with Shimano HG12 12-speed chains such as:

• XTR CN-M9100/M9200
• XT CN-M8100/M8200
• SLX CN-M7100/M7200

Regular = Compatible with most 9-12 speed drivetrains including the following:

• All 9, 10, 11, & 12-speed SRAM drivetrains 
• All 9, 10, & 11-speed Shimano drivetrains
• All 9, 10, & 11-speed KMC chains
• Single speed setups

Axle Selection & Frame Compatibility:

Select your axle width based on your frame's rear hub spacing, drivetrain standard, and required stay clearance. All widths are engineered to the same high-strength standard for everything from DJ to DH.

130mm

Chainline: 52mm
Q-Factor: 168.5mm
Arm Clearance: 70.25mm

Frame Fitment: Dirt Jump, XC, and Trail frames with 135mm, 142mm, or 148mm Boost spacing.
Standards: Matches SRAM Eagle Boost (52mm) and Shimano M9100 / M8100 / M7100.
Technical Note: Optimized for riders seeking the narrowest stance (Q-factor) on bikes with standard chainstay profiles.

136mm

Chainline: 55mm
Q-Factor: 174.5mm
Arm Clearance: 73.25mm

Frame Fitment: Modern 29er Trail and Enduro frames with high tire clearance and wide stays.
Standards: Matches SRAM Transmission (T-Type), SRAM DUB Wide, and Shimano M9120 / M8120 / M7120.
Technical Note: Required for SRAM T-Type systems. Provides +3mm lateral arm clearance per side to clear flared or oversized chainstays.

145mm

Chainline: 56.5mm
Q-Factor: 183.5mm
Arm Clearance: 77.75mm

Frame Fitment: Downhill (DH) and Super Boost+ frames.
Standards: Matches SRAM DUB DH, SRAM SB+(Super Boost), and Shimano M9130 / M8130.
Technical Note: Designed for 157mm rear spacing. Requires a 6mm offset chainring to maintain the 56.5mm chainline. Maximum clearance for reinforced gravity frames.

Weights

130mm spindle = 104g
136mm spindle = 107g
145mm spindle = 113g
165mm CR1 cranks with 136mm spindle = 680g
32T 8-bolt chainring SRAM TT 8 bolt = 72g