A practical sports accessory, E Bike Power Torque Arm Set, protects rear dropouts during hub-motor installations and transfers torque securely. Peace of mind for commuters and DIY mechanics fitting motors or upgrading for heavier use. Will the dimensions and included hardware match your axle and wheel setup?
⚡ At a Glance
- • Holding Strength: 6mm thick 304 stainless steel resists bending while transferring motor torque to frame dropouts
- • Best for: DIY e-bike builders fitting hub motors and riders upgrading rear motors
- • Not ideal for: Frames without hub motors or axles outside the specified M12/14mm compatibilities
304 stainless steel construction and a universal assembly transfer torque away from vulnerable dropouts. Kit includes two torque arms, M5 x 16mm Allan bolts and M6 washers for a straightforward fit.
Protects frame dropouts - thanks to 304 stainless steel construction
304 stainless steel offers good endurance properties and resists oxidation and corrosion, while the 6mm plate thickness maintains rigidity under load. The geometry transfers motor torque through the frame rather than through the dropout faces.
Frame damage is reduced during strong acceleration and hill starts, preserving frame integrity and avoiding costly repairs.
Secure axle fit - with precise M12 hole and compatible shaft sizing
Axle hole measures 12.1mm round and 10.1mm on the flat sides, with a 13mm x 6mm oblong slot for alignment. Designed for motor shafts of 14mm round and 10mm on the flat sides.
Accurate tolerances help prevent axle rotation in the dropout and make alignment and torque transfer reliable during installation.
Ready-to-fit kit - with M5 x 16mm Allan bolts and M6 washers included
Kit contains two 6mm torque arms, two M5 x 16mm Allan bolts and two M6 washers; washers measure 6.2mm inside diameter and 12mm outside diameter. Packaged in a clear zip-sealed bag.
Necessary fasteners arrive with the torque arms, reducing the need for additional trips to a hardware store and speeding up installation.
✨ The 4 Key Reasons for E Bike Power Torque Arm Set
- Wide Motor Compatibility – Fits hub motors rated from 250W up to 2000W
- Precise M12 Axle Hole – Ensures accurate alignment with M12 axles and flats
- Complete Hardware Included – Contains M5 bolts and M6 washers for immediate fitting
- Slim 6mm Profile – Minimal added width while preserving structural strength and rigidity
📋 Technical Details at a Glance
- Product type: Torque arm set
- Material: 304 stainless steel
- Thickness: 6mm
- Main body dimensions: 47.5mm x 33mm
- Axle hole: M12 (12.1mm round, 10.1mm on flats)
❓ Frequently Asked Questions
Q: Will this fit my M12 axle?
A: Axle hole measures 12.1mm round and 10.1mm on the flat sides, designed to work with motor shafts that are 14mm round and 10mm on the flats.
Q: What material is used and how durable is it?
A: Construction uses 304 stainless steel, chosen for endurance and resistance to oxidation and corrosion to give a long service life.
Q: What comes in the kit?
A: Two 6mm torque arms, two M5 x 16mm Allan bolts and two M6 washers, packaged in a clear zip-sealed bag.
🏆 Our Verdict
Suited to DIY builders and riders fitting or upgrading rear hub motors, from commuter conversions to higher-power setups. Robust 304 stainless construction, accurate axle tolerances and included fasteners make installation straightforward and protective. Compact profile and corrosion-resistant finish deliver long-term value by reducing maintenance and protecting frame dropouts.
