Atomic Billet Main Cap Girdle – Ford Barra 6-Cyl | 10mm or 16mm | DOHC & SOHC | High Tensile Steel
Description:
As Barra-powered builds push beyond 400kW at the tyres, the stock bottom-end starts to show its limits. Main caps begin to “walk” on the block, throwing off crankshaft alignment and accelerating bearing wear — sometimes catastrophically.
The Atomic Billet Main Cap Girdle is precision laser-cut from billet high-tensile steel and CNC-machined to exact tolerances. It’s designed to tie all 7 main caps together, adding critical structural integrity to the bottom-end of your Ford BA–FG DOHC or SOHC 6-cylinder engine.
Available in 10mm or 16mm thickness, and compatible with both standard and billet main caps, this girdle installs without needing to modify your sump or clearance your conrods — unlike cheap, copycat alternatives. If you're chasing reliable performance at 400kW+ or building for 1000+hp, this is an essential reinforcement.
✅ Key Features:
✅ Suits Ford BA–FG 6-cyl engines – DOHC & SOHC
✅ Available in 10mm or 16mm thick high-tensile billet steel
✅ Works with standard OR billet main caps
✅ Laser cut and CNC machined – superior fit and finish
✅ Ties all 7 main caps together to prevent cap walk
✅ Maintains bearing alignment and crankshaft integrity under extreme load
✅ No sump notching or welding required – fits without mods
✅ Provides minimum 4mm clearance to conrod bolts
✅ Counterbored holes allow proper bolt engagement into the block
✅ Fits with OEM or aftermarket main studs/bolts
🛠️ Why Choose the Atomic Girdle Over Cheaper Copies?
✔️ Precision-milled for conrod clearance — no bolt interference
✔️ Counterbored bolt holes ensure proper thread engagement
✔️ Sump-friendly fitment (10mm) — no modifications or welding required
✔️ Suits high-performance street, drag, or circuit builds
✔️ Used in Atomic-built engines pushing 1000–1500+hp
📦 What’s Included:
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1x Atomic Billet Steel Main Cap Girdle
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Choice of 10mm or 16mm thickness
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Suits SOHC (requires one factory bolt for oil pump clearance) and DOHC engines
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Compatible with standard or billet main caps
- 16mm Girdle requires sump modifications for clearance
