The CapeSport Rear Tramp Bar Kit controls axle movement under acceleration on Austin Healey BN2 to BJ7 models. Engineered to reduce wheel hop and axle tramp, it stabilises the live rear axle and improves traction without altering ride quality. This bolt-on kit replaces the original spring plates with purpose-designed CapeSport plates, so no welding or chassis modification is required.
The kit includes a pair of adjustable tramp bars, replacement shackle plates, and mounting hardware for both sides of the axle. Each component is precision-made from high-grade steel and zinc-coated for corrosion resistance. The design offers the performance benefits of a period competition setup while remaining fully reversible.
Key Benefits
- Prevents axle tramp and wheel hop under acceleration.
- Improves rear traction and cornering stability.
- Maintains correct pinion angle for smooth driveline operation.
- Reduces strain on rear springs and axle mounts.
- Fully bolt-on design – no welding required.
- Durable steel construction with adjustable end fittings.
- Reversible installation suitable for road or competition cars.
Fitment & Compatibility
Which Austin Healey models will this fit?
Fits all Big Healey models from BN2 to BJ7 inclusive, using the standard live rear axle and leaf spring suspension configuration. Designed as a direct fit with supplied spring plates and shackles.
Which models are excluded?
Not suitable for early BN1 cars (chassis before 221536) or later BJ8 models, which use different rear suspension geometry with radius arms.
What’s Included
- 2 × CapeSport tramp bars (left and right, adjustable length).
- 2 × replacement bolt-on spring plates.
- 2 × complete shackle plate assemblies.
- Full fixing kit – nuts, bolts, and washers.
- Installation guide.
Technical Details
- Material: High-tensile steel with black powder-coated finish.
- Joints: Adjustable threaded ends with spherical rod ends (rose joints).
- Mounting: Bolt-on chassis and spring plate system – no welding.
- Application: Rear suspension torque reaction control.
- Supplied as a matched left/right pair.
Installation & Setup
The kit is designed for bolt-on installation using standard workshop tools. Each side replaces the factory spring plate with the CapeSport plate, providing the mounting point for the tramp bar. Once fitted, check that both bars move freely through the suspension range without fouling any components. Torque all fixings to the recommended values and recheck after initial road use.
Professional alignment is advised for cars used in competition or where suspension geometry has been modified.
Why Choose This Part
This CapeSport design replicates the functionality of historic anti-tramp systems while offering a completely bolt-on solution. Ideal for Healeys driven enthusiastically on the road or in historic motorsport, it provides effective control of axle wind-up and wheel hop without permanent alteration. Its reversible nature makes it a smart choice for restorers seeking period-style performance improvements.
FAQs
What does a tramp bar do?
A tramp bar limits axle rotation under acceleration, preventing the rear wheels from hopping or losing grip. It keeps the axle steady, improving traction and driveline stability.
Will I need to weld anything?
No. The CapeSport kit replaces the original spring plates with bolt-on units, allowing installation without welding or chassis modification.
Will it change the ride quality?
No noticeable difference during normal driving. The bars only engage under load, so ride comfort remains unaffected.
Is it suitable for competition cars?
Yes. The design is strong enough for competition use, providing consistent axle control under heavy acceleration and cornering.
What maintenance does it require?
Check bolts and bushes periodically for tightness and wear. Lubricate joints lightly during servicing to ensure smooth movement.
CapeSport