Automotive suspension aid that uprates rear coil springs for towing and heavy loads. Restores confidence by reducing rear sag and the risk of bottoming out while hauling caravans or trailers. Are Streetwize Coil Spring Assistors the right choice for regular towing?
⚡ At a Glance
- • Load Support: Uprates rear coil springs to reduce over-compression when carrying heavy loads
- • Best for: Drivers who tow caravans, trailers or regularly carry heavy loads on light vehicles
- • Not ideal for: Front-spring fitment or vehicles without coil springs, since fitment is rear springs only
Pack of two assistors fit into 18–25mm rear spring gaps and include two securing cable ties. Designed to reduce suspension sag and prevent springs over-compacting while towing.
Prevents bottoming out – thanks to 18–25mm gap fit
Designed to slot into the free gap between rear coil springs, occupying space during compression to limit excess travel. The 18–25mm compatibility ensures a snug fit where gaps fall within that range.
Reduced risk of the rear end hitting bump stops when towing, improving stability under load and preserving suspension travel.
Quick fit and secure – with supplied securing cable ties
Two cable ties are supplied to anchor assistors in position once placed in the spring gap, preventing movement during use. The simple fix method relies on mechanical restraint rather than adhesives or specialist tools.
Installation can be completed roadside before a tow, and secure fastening keeps the assistors stable over long journeys.
Uprates suspension for towing – with rear-spring specific design
Intended exclusively for rear coil springs, the assistors alter spring behaviour under load by limiting over-compaction when carrying caravans, trailers or heavy payloads. Fitment to the rear springs concentrates the support where towing loads act.
Improved ride height and reduced sag under load, which helps maintain handling and may reduce repeated strain on suspension components.
✨ The 4 Key Reasons for Streetwize Coil Spring Assistors
- Pack of 2 — Enables support on both rear springs for balanced load control
- 18–25mm gap compatibility — Fits common rear coil spring gaps precisely for secure seating
- Included securing cable ties — Keeps assistors firmly in place during long-distance towing
- Designed for towing loads — Helps maintain rear ride height when hauling caravans or trailers
📋 Technical Details at a Glance
- Category: Automotive Parts and Accessories
- Brand: Streetwize Accessories
- Product Type: Coil Spring Assistors
- Pack Quantity: Pack of 2
- Fit Location: Rear coil springs only
❓ Frequently Asked Questions
Q: Can these be fitted to the front springs?
A: Spring Assistors must only be fitted to the rear springs of a vehicle, so front-spring fitment is not recommended.
Q: What spring gap size do they suit?
A: They are designed to suit a gap distance of 18mm–25mm between coil spring coils.
Q: Are any accessories included for fitting?
A: Two securing cable ties are supplied to anchor the assistors once positioned in the spring gap.
🏆 Our Verdict
The Streetwize Coil Spring Assistors suit drivers who regularly tow caravans, trailers or carry heavy loads on light vehicles. Simple rear-spring fitment and 18–25mm gap compatibility make them a practical uprate that reduces sag and the risk of bottoming out. The basic kit, including securing cable ties, should deliver long-term value by lowering repeated suspension stress.
