EF Civic Traction Bar Arm

2026-03-11T01:13:36-05:00

Vendor: Doryoku
Type: Doryoku Accessories
Price: 125.00 - 230.00 (5 variants)

If you struggle with clearance on your engine pulley or transmission case rubbing on the traction arm under suspension compression (cornering, braking, suspension travel) than this is a absolute must-have item for you !!

I made these in 2014 for my own 550whp EF after not finding any solution. My billet arms has found their way to the racer community with clients ranging from 600whp time attack track cars to 7sec drag cars.

The billet arms give you 1.25" of clearance from the traditional straight arm. The added clearance is needed with the following engine swaps:

• H / F series engine swap crank pulley clearance

• J series engine swap for transmission & pulley clearance

• B series engine swap for ATI damper clearance

• B series engine swap for AWD transmission case clearance

• K series engine swap for transmission & pulley clearance (especially K24)

Doryoku EF radius clearance arm specs:

• Billet 6061-T aluminum

• 2lbs lighter than steel arms

• Proper fixed LCA mount for reduce suspension deflection

• Includes longer bolts

Installs with these aftermarket traction bars:

• Innovate Pro series

• Innovate Competition

• Maxspeedracingrod

• Full-Race / ebay

Straight Billet Arm

Optional billet straight arm to replace the other side. This is especially important for folks with Full-Race / ebay / K-tuned traction bars. Those are designed with a double hiem joint, one at the traction bar & the other at the LCA. When you buy a radius arm that has a fixed LCA mounting point, it's important to make sure the other arm has the same suspension movement.