The rear crossmember on S13, S14, and S15 Silvia/180SX models is a known weak point that flexes under hard acceleration and cornering, causing drivetrain shift, wheel hop, and inconsistent power delivery. SuperPro’s Rear Crossmember Insert Enhancement Kit (part SPF2687K) reinforces the outer crossmember mounting points (top and bottom) with high-performance polyurethane bushings and supplementary washers, dramatically increasing rear chassis stiffness and improving traction.
This focused enhancement kit is an excellent upgrade for lowered, drift, or high-power builds, delivering tighter rear-end response and reduced movement without requiring a complete subframe replacement.
At Terra Firma Automotive, we stock these genuine SuperPro Rear Crossmember Insert Enhancement Kits ready to ship.
- Rear Crossmember Insert Enhancement / Subframe Bushing Kit (SPF2687K)
- Reinforces outer crossmember top and bottom mounting points
- Includes 8 high-performance polyurethane bushings + supplementary washers
- Reduces rear chassis flex and drivetrain movement
- Improves traction, reduces wheel hop, and sharpens power delivery
- Ideal for performance, lowered, or drift S13/S14/S15 builds
- Significantly stronger and more durable than factory rubber
- Professional installation recommended (approx. 4 hours)
- Wheel alignment required after installation
- Backed by SuperPro Lifetime Manufacturer’s Warranty
- ⚠️ California Proposition 65 Warning: This product can expose you to chemicals which are known to the State of California to cause cancer and reproductive harm - www.P65Warnings.ca.gov
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