HPI Racing BAJA BJ055 Delrin Collars 4pcs by GPM BJ055/DC  [BJ055/DC]

Delrin collars for BJ055

These Delrin collars are an aftermarket RC-scale accessory produced by GPM for the HPI Racing BAJA BJ055 platform. Supplied as a set of 4pcs, the collars act as axle spacers to maintain correct wheel spacing and reduce lateral play on the BJ055 assembly.

Constructed from Delrin, the parts offer low friction against adjacent metal components and resist compression compared with softer plastics. In practice they sit between bearings, hexes or gears to keep axle geometry consistent during cornering and over rough terrain.

Installation is straightforward for anyone familiar with basic wheel and axle service: remove the wheel and hex, slide the collar into position on the axle or hub area where spacing is required, then reassemble and verify endplay. Because these are scale RC parts, use standard RC hand tools and avoid over-tightening to prevent compressing nearby components.

Tuning notes: collars change effective axle spacing, so small adjustments can affect camber and toe under load. Use them to take up slack before adding shims or changing hub geometry, and check wheel runout after fitting. The Delrin material helps minimize wear on mating parts but does not replace proper bearing selection or alignment checks.