Bump Stops / Suspension Travel Limiters

Bump stops for lowered vehicles and sporty tuning

Lowering a vehicle is one of the most popular modifications in the car tuning scene, improving both appearance and handling. However, lowered cars and vehicles fitted with large wheels quickly run into a familiar issue: tires can rub against the wheel arch when the suspension compresses, or the body may bottom out on the road surface. This is where TA Technix bump stops come in – a reliable solution for safe, controlled driving even at significantly reduced ride heights.

Our range includes high-quality TA Technix bump stops in various designs, bore sizes, and lengths for a wide selection of vehicle models.

What is a bump stop?

A bump stop – also known as a suspension travel limiter or jounce bumper – is a component made from high-quality polyurethane or rubber that is fitted onto or clipped around the shock absorber's piston rod. It limits the maximum suspension travel of the vehicle: the damper bottoms out earlier, preventing contact between the tire or body parts and the wheel arch.

On vehicles where the shock absorber and spring are mounted separately – for example at the rear axle of certain models – bump stops are installed directly inside the spring. Many production vehicles already have bump stops fitted as standard. In the tuning world, they are essential when lowering springs are combined with large wheel and tire setups.

Which types of bump stops are available?

TA Technix offers bump stops in several versions tailored to different vehicle and installation requirements.

Closed bump stops are threaded onto the piston rod when the strut is fully removed. They are ideal when a suspension overhaul is already being carried out. Available in various bore sizes (e.g. 13 mm or 22 mm) and lengths (e.g. 32 mm or 63 mm).

STICK-it Clip bump stops feature a side opening that allows them to be clipped directly onto the piston rod in most cases without removing the damper. This time-saving option is available in bore sizes of 12 mm, 15 mm, and 21.5 mm and is ideal for a quick retrofit.

Rear axle bump stops (HA Mushroom) are specifically designed for vehicles where the shock absorber and spring are mounted separately at the rear axle – for example for certain Opel and BMW models with a 42 mm seat diameter.

How does a bump stop work?

The bump stop sits on the shock absorber's piston rod and progressively takes up the available working space as the suspension compresses. Once the vehicle compresses the suspension and the bump stop becomes sandwiched between the piston rod and the damper housing, it acts like an additional progressive spring: instead of transferring a hard impact to the body, it absorbs the force and cushions the movement.

This prevents the tire from rubbing against the inner wheel arch when the suspension compresses and stops the body from grounding out. At the same time, a controlled driving behaviour is maintained, as extreme compression movements – such as those caused by speed bumps, potholes, or cornering – are effectively limited.

When are bump stops recommended?

Bump stops are recommended in a number of situations: on vehicles lowered with sport springs or coilover kits, when fitting wide or large wheels with limited clearance to the wheel arch, and on vehicles that are regularly heavily loaded or tow a trailer. Bump stops are also a proven tuning tool in motorsport for fine-tuning suspension behaviour.

Important: the length of the bump stop must be carefully matched to the amount of lowering and the remaining suspension travel. A bump stop that is too long can reduce suspension travel to an uncomfortable or even safety-critical level. If in doubt, seek professional advice before fitting.

What should I look for when buying bump stops?

Several factors are key to selecting the right bump stop. First, you need to know the piston rod diameter of the installed shock absorber, as the bore of the bump stop must match it precisely. The length is equally important: it determines how much the suspension travel is shortened.

When choosing between a closed version and a STICK-it Clip, installation effort plays a role. While closed bump stops can only be fitted with the strut removed, clip versions can often be installed with the damper in place. TÜV inspection (German vehicle safety approval) is generally not required for bump stops.

What are the advantages of buying bump stops from TA Technix?

TA Technix stands for high-quality tuning components and many years of experience in chassis technology. The bump stops are manufactured from oil- and weather-resistant special rubber or polyurethane, designed for long service life and high load capacity.

Customers benefit from a wide product range covering different types, bore sizes, and lengths for numerous vehicle models, as well as expert advice from experienced staff.

You also benefit from fast delivery times, secure payment options, and reliable customer service. With bump stops from TA Technix, you choose quality, safety, and optimal suspension control – even for lowered or sportily tuned vehicles.