RodderMods

Chassis stiffening

1958–71 Aston Martin DB4–DB6 chassis stiffening

3 kits to stiffen the frame, from frame rails and connectors to braces and roll bars.

Stiffening kits

Prices checked Oct 14, 2026

AreaKitWhat it isPrice
Roll bar & cage Custom Cages ASTON MARTIN DB4 Bolt-in CDS roll cage MS UK Compliant Bolt-in cage for DB4; no DB5/DB6 cage listed. See source Price on application Source
Structural repair panels Aston Workshop (astonparts.com) Aston Martin DB5/6 Gearbox Tunnel (DB5-GBT) Replacement transmission tunnel panel; DB4 version also listed. See source Page shows GBP 485.48 ex VAT (UK seller); no USD price Source
Structural repair panels Aston Workshop (astonparts.com) Aston Martin DB4/5/6 Spare Wheel Well Base Repair Panel (AWP470C) Repair panel; may need modification to fit. See source Page shows GBP 400.00 ex VAT (UK seller); no USD price Source

Prices are from the linked seller pages and change often. Confirm fitment for your exact year and body style before ordering; many weld-in parts need professional installation. Some links earn us a commission.