Fastrax TRX-4 Brass Knuckle Weights (2) – FTTX329BR

The Fastrax TRX-4 Brass Knuckle Weight Basic Version (2) is a straightforward upgrade identified by part number FTTX329BR. As a knuckle-mounted solution, it positions mass low at the axle, offering a direct way to influence handling balance and front-end feel during technical driving.

Why Use Brass Knuckle Weights

Adding brass at the knuckles increases unsprung mass close to the wheels, which can help lower the centre of gravity, promote more consistent tyre contact, and aid stability on climbs, descents, and off-camber sections. It’s a clean, durable approach to fine-tuning steering response and traction without changing electronics or tyres.

Finished in brass and presented as a basic version, this Fastrax option keeps things simple for hobbyists looking for a tidy, effective handling tweak. The clear product naming and part number make identification easy for spares tracking and setup notes.