Please let us know the Piston size, Big End and Main Bearing sizes that you want for this kit

Spool AU 4.0 Litre Ford Conrods and Custom Ross Racing Pistons

This combination uses the BA Rod with a Custom Piston

These are a custom piston made for us and rated at 1000hp by Ross Racing Pistons. The pistons come standard with a 0.200" (5mm) Tool steel 52100 gudgeon pin.

This Rebuild Kit includes the following quality parts:

• Spool Forged H Beam Conrods
• Ross Racing Forged Pistons (Rings, Pins and Locks Included)
• Cometic MLS Head Gasket
• ACL Race Series Main Bearings - STD or 0.25mm
• ACL Race Series Big End Bearings - STD or 0.25mm

Pistons are available in:

• Compression Ratios: 9.0:1
• Bore Sizes: +0.5mm and +1mm
• Pistons come with rings, gudgeon pins and pin locks
• Forged 2816

Ross Racing Pistons:

All of Ross Racing Pistons (since 1985) have been forged from 2618 billet bar stock and have been heat treated and aged to a T61 condition (2618-T61). 2618-T61 is the material that is used when fatigue resistance and durability are of prime importance by all premium racing piston manufacturers.

Spool Connecting Rods Feature:

• ARP 2000 fasteners (L19 fasteners are available as an upgrade)
• High tensile 4340 forged steel
• 2 Piece forging
• Hardness of HRC36-42
• Dowelled caps for precision alignment
• X-RAY & Sonic tested
• Quenching and heat treated
• Shot peened
• 100% Magnafluxed
• Weight Matched Sets +/- 1 gram
• Vacuum degassed to remove impurities