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

HPI Bullet 3.0 Mt And St (Nitro Engines) Alloy Front/Rear Adjustable Spring Damper With 3.5mm Thick Steel Shaft - 1pr set - GPM BMT3100F/R
Price:
USD$20.90
Brand:
GPM
Model:
BMT3100F/R
GTIN:
4894538029215
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Precision adjustable dampers for Bullet 3.0

The BMT3100F/R is a CNC-friendly aluminium alloy front and rear adjustable spring damper set engineered for HPI Bullet 3.0 MT and ST nitro chassis. Supplied as a single pair, the design combines a 3.5mm hardened steel shaft with an aluminium alloy body to increase fatigue resistance and retain dimensional stability compared with polymer housings.

From an installation perspective the dampers replicate the Bullet 3.0 MT and ST mounting geometry and stroke to allow direct swap-in. The adjustable spring platform supports ride height and preload tuning across both front and rear corners, enabling targeted setup changes without chassis modification.

For suspension tuning, address spring rate and preload first; the alloy body and rigid shaft provide a neutral mechanical baseline while oil viscosity and piston selection remain the primary variables for tuning compression and rebound response. Fit using standard RC workshop tools, verify thread engagement and pivot clearances, and inspect shaft travel for smooth, concentric movement before track use.

Specifications

  • Item: Adjustable front/rear spring damper, 1pr set
  • Material: Aluminium alloy body, 3.5mm thick steel shaft
  • Model Number: GPM BMT3100F/R
  • Compatibility: HPI Bullet 3.0 Mt And St (Nitro Engines)

A precision upgrade aimed at hobbyists and tuners who require a metal-bodied damper with a thicker shaft to improve straightness and long term durability on HPI Bullet 3.0 MT/ST nitro chassis.

Are these dampers direct fit to Bullet 3.0 mounts?

Yes. The components are dimensioned to match Bullet 3.0 MT and ST mounting points and stroke, enabling direct replacement of stock dampers without chassis modification.

What materials and construction details matter?

Key elements are the aluminium alloy body for improved wear resistance and a 3.5mm steel shaft that increases rigidity and maintains straightness under load compared with smaller diameter shafts.

How should I approach damping setup?

Use spring rate and preload to set ride height and static behaviour first, then iterate on oil viscosity and piston selection to dial compression and rebound to track or terrain conditions.

Workshop checks before use?

Inspect shaft concentricity and travel, confirm secure thread engagement and pivot point clearance, and perform a bench evaluation of damping response before fitting to a vehicle for dynamic testing.