HPI Bullet 3.0 Metal Spring Dampers Front/Rear BMT3100F/R by GPM  [BMT3100F/R]

Front and rear alloy dampers for Bullet 3.0 chassis

The BMT3100F/R is an aluminium alloy adjustable spring damper set built for HPI Bullet 3.0 MT and ST nitro chassis. Supplied as a single pair, the kit pairs a 3.5mm steel shaft with an aluminium alloy body to boost durability compared with plastic housings while keeping weight appropriate for model-scale suspension systems.

These dampers allow adjustable spring support so you can set ride height and preload across front and rear corners. The components are designed to align with the Bullet 3.0 MT and ST mounting geometry and stroke, enabling a direct replacement of the original dampers without modifying chassis mount points.

When tuning shocks, alter spring rates and preload first before changing pistons or oil; the alloy body and steel shaft prioritise mechanical strength and straightness, while oil grade and piston selection control compression and rebound. Fit using standard RC tools, check threads and pivot points, and confirm smooth shaft travel before operating the model.

A solid metal-bodied damper option for hobbyists wanting a stiffer shaft and better durability for HPI Bullet 3.0 MT/ST nitro models during suspension setup and use.