Tamiya TRF421 Spares, Parts & Upgrades

Keep your Tamiya TRF421 running at its best with our wide range of genuine spares and carefully chosen hop-ups. From suspension arms, C-hubs and steering knuckles to belts, pulleys, diffs, spools and outdrives, you’ll find the parts you need for fast fixes or fine-tuning. We also stock shock towers, dampers, seals and O-rings, turnbuckles, bearings, chassis plates, bulkheads, screws and setup shims – all clearly labelled for TRF421 compatibility.

Filter by drivetrain, suspension, chassis or hardware to locate the exact component, and always cross-check part numbers with your manual for a perfect fit. Whether you’re refreshing a race car or preparing a spare box for trackside repairs, we’ve got you covered.

With large stocks, fast dispatch and UK Next Day delivery options, you can get back on the grid sooner. And if you’re unsure which part you need or want upgrade advice, our friendly, knowledgeable team is here to help. Explore the full Tamiya range too, including tools, oils and consumables to keep your TRF421 dialled in.