T4 V-4 Shock Absorber Spring

Four SRC T4 V-4 shock springs ready to bring your suspension back to life

The SRC T4 V-4 Shock Spring (ref. SRCRM0821) is a precision replacement designed to keep your slot car's suspension system in perfect working condition. The pack includes 4 units, allowing for a complete renewal of the shock assembly on a single axle or providing spare units for future interventions.

Technical specifications

• Contents: 4 x T4 V-4 Shock Spring
• Spring length: 6.2 mm
• Outer diameter: 2.8 mm
• Inner diameter: 2.4 mm
• Reference: SRCRM0821
• Brand: SRC

Function and performance

The shock spring is one of the most fatigued elements within a slot car's suspension system. With use, the spring's elastic constant can degrade, causing irregular responses in corners, increased tendency to deviate on changes in elevation, or simply erratic behaviour that complicates car tuning.

Replacing worn springs with new units like these — with perfectly defined measurements — is the first step before any serious suspension adjustments. Working with fatigued springs is one of the most common mistakes when preparing a car: compensating with other parameters for what is actually a mechanical issue.

Installation and preparation

Since the pack includes 4 units, you will have springs for the two usual damping points in SRC T4 V-4 models, plus a spare pair. During installation, ensure that the spring is correctly centred in its housing and that there is no excessive preload with the car at rest. Once installed, check the free travel of the suspension before proceeding to fine-tune height and stiffness.

Compatibility

This spring is specifically designed for the SRC T4 V-4 models. Consult the manual or technical sheet of your specific model before replacing them with springs of another reference, as an incorrect measurement can alter the suspension geometry and track behaviour.

Common mistakes

• Reusing visibly deformed springs or those with irregular coils: although the car may "function", the tuning will never be precise.
• Mixing springs of different references on the same axle: introduces asymmetries in cornering behaviour.
• Not cleaning the spring housing before installing new units: remnants of old lubricant can alter internal friction.

Frequently asked questions

Which SRC models is this spring designed for?

It is designed for SRC models in the T4 V-4 line. If you have questions about compatibility with your specific car, consult the reference in your model's manual or contact us.

Why does it include 4 units and not 2?

The pack of 4 allows for the renewal of the two damping points of the car and provides a spare pair for future interventions, which is particularly practical in competition where spare parts must always be on hand.

How often should shock springs be replaced?

There is no fixed interval, but it is advisable to check them if the car exhibits irregular behaviour in corners or if they have undergone many running sessions. Visual inspection (open coils, deformation, free length out of specification) is the best indicator.

Can I use these springs in other cars of similar scale?

The measurements are very precise (6.2 × 2.8 × 2.4 mm), so they could physically fit in equivalent-sized housings from other brands. However, we recommend using them only in the models for which SRC has designed them to ensure correct suspension behaviour.

The SRC T4 V-4 shock spring (ref. SRCRM0821) is a precision replacement part for slot car suspension systems. This pack contains 4 springs measuring 6.2 mm in length, 2.8 mm outer diameter and 2.4 mm inner diameter, specifically engineered for SRC T4 V-4 models. Essential for club racers and hobbyists looking to maintain optimal suspension performance and consistent lap times.