380 km/h bench test
1/7 Foam Racing Tires
High-grip foam compound, precision-trued for true roundness and zero wobble at speed. Bench-tested to a 380 km/h equivalent linear speed.
- 1/7 specific
- Precision trued
- Bench verified
PRACDIY RACING PARTS · 1/7 & 1/10
1/7 foam racing tires, Ford and Le Mans polycarbonate body shells,
ARRMA F1 / Infraction / Firebird chassis — and every part inside them.
A complete supply for the ARRMA 1/7 platform: tires, body shells, chassis and every spare part.
380 km/h bench test
High-grip foam compound, precision-trued for true roundness and zero wobble at speed. Bench-tested to a 380 km/h equivalent linear speed.
Polycarbonate
Polycarbonate shell, impact and cold resistant. Clear, paint-ready, and built to survive the crashes that end other shells.
Le Mans prototype
Le Mans prototype styling with a low, aggressive racing stance. Same heavy-duty PC construction for real track abuse.
1/7 platform
F1, Infraction and Firebird — three closely related 1/7 chassis. Subtle differences, shared architecture.
Full parts range
Every part inside the chassis, in stock: drive shafts, carbon fibre components, titanium parts. If it breaks, we have it.
Three closely related ARRMA 1/7 chassis — that's exactly why we can keep every single part in stock.
One of three closely related chassis — only subtle differences from the others, most parts shared.
One of three closely related chassis — only subtle differences from the others, most parts shared.
One of three closely related chassis — only subtle differences from the others, most parts shared.
Subtle differences between the three → high parts commonality → every part inside the chassis is in stock.
We believe a tire's limit shouldn't be discovered by the buyer — on the track, in a crash.
Racing tires are spun to their limit on a dedicated high-speed rig — an equivalent linear speed of 380 km/h — with the carcass holding shape and staying balanced. Every tire line is tested beyond race conditions before it leaves the factory.
* Bench test — equivalent linear speed, not on-track road speed. Full test conditions and data reports available on request.
3K twill weave, high strength-to-weight. Stiffer chassis feel and faster response where it counts.
High strength, corrosion resistant, lightweight — the ideal upgrade for the drivetrain.
Clear, impact and cold resistant. Body shells that stay reliable in crashes and low temperatures.
Bench tests and track runs — unedited, straight from the workshop.
* Raw workshop footage. Video titles (e.g. "380 km/h bench test", "Infraction track run") can be added on request.
Test-driven, not marketing-driven.
Bench-tested and track-validated before anything ships. Performance you can measure.
CNC-machined with tight tolerances. Drop-in fit — no filing, no guessing.
Carbon fibre and titanium where it matters — less weight, more durability.
Every part inside the ARRMA 1/7 chassis, in stock. No waiting weeks for one small part.
Stock items ship quickly. Custom runs on agreed lead times, with updates throughout.
Custom specs, materials and finishes — from your drawing or a sample.
From a drawing or a sample to volume delivery.
Tell us the car, the spec and the quantity. We advise on material and process.
Send a drawing or ship us a sample. Our engineers assess feasibility and quote.
We build a prototype, you test-fit it, then we move to production.
Batch production on the agreed schedule, quality-checked before dispatch.
* MOQ and lead times depend on the part and spec — contact us for details.
PRACDIY was founded by RC racers and manufacturing engineers. We've crashed, stripped threads and blown tires — so we know exactly what a good part has to do.
We focus on 1/7 and 1/10 performance platforms: the ARRMA F1 / Infraction / Firebird chassis family, foam tires and PC body shells — plus every component inside the chassis.
Speed belongs on the track. Reliability belongs with us.
Tell us what you need — we usually reply within 24 hours.