Built for riders who push the limits of technical trail and enduro riding, the 5Dev R-Spec Trail Enduro Cranks deliver strength, clearance, and precision in one sleek package. Designed around the demands of modern mountain bikes, these cranks combine a low-profile shape to reduce pedal strikes with a lightweight, race-ready build that surpasses ISO Race standards.
Whether hammering up rocky climbs or threading through tight switchbacks, riders will appreciate the confidence and control that come from a dialed Q-factor and a stiff, responsive pedaling platform. The matte finish gives it a refined look that’s all business, while the proven durability of 5Dev engineering ensures years of reliable performance.
Key Features:
Low-profile crank arms help minimize pedal strikes on technical climbs and descents
Compatible with SRAM 3-bolt direct mount chainrings for easy setup
Updated design exceeds ISO Race standards for strength and performance
Optimized Q-Factor: 167mm for 52mm Boost, 176mm for Super Boost+
Sleek new matte finish for a clean, modern look
Weight: 610g (165mm length with 29mm spindle)
Backed by a 5-year warranty for long-term confidence
Note: Spindle sold separately (use FD140* for proper fit).
Specifications & Identifiers
Bottom Bracket Included
No
Bottom Bracket Shell Width (mm)
73
Chain Compatibility
11-Speed, 12-Speed
Chainline/Hub Compatibility
141/148 Boost Hubs, 150/157 Hubs
Chainring BCD
Direct Mount - SRAM
Chainring Setup
Mountain Single / 1x
Chainrings Included
No
Color
Black, Silver
Crank Arm Length
135mm, 145mm, 155mm, 160mm, 165mm, 170mm
Defined Color
Black, Silver
Designed for ebike
No
Frame Interface
BB92, English Threaded
Intended Use
Mountain
Number of Speeds
11-Speed, 12-Speed
Pedal Spindle
9/16"
Rings
None
Spindle Interface Type
5Dev
Spindle Length (mm)
No Spindle
Weight
610
Black - 135mm UPC
850076919221
Black - 135mm MPN
R135-01
Black - 145mm UPC
850076919245
Black - 145mm MPN
R145-01
Black - 155mm UPC
850076919269
Black - 155mm MPN
R155-01
Black - 160mm UPC
850076919283
Black - 160mm MPN
R160-01
Black - 165mm UPC
850076919306
Black - 165mm MPN
R165-01
Black - 170mm UPC
850076919320
Black - 170mm MPN
R170-01
Raw Silver - 135mm UPC
850076919238
Raw Silver - 135mm MPN
R135-02
Raw Silver - 145mm UPC
850076919252
Raw Silver - 145mm MPN
R145-02
Raw Silver - 155mm UPC
850076919276
Raw Silver - 155mm MPN
R155-02
Raw Silver - 160mm UPC
850076919290
Raw Silver - 160mm MPN
R160-02
Raw Silver - 165mm UPC
850076919313
Raw Silver - 165mm MPN
R165-02
Raw Silver - 170mm UPC
850076919337
Raw Silver - 170mm MPN
R170-02
Tree Fort ID:
333222472726
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