Description

This Rebuild Kit includes the following quality parts:

SPOOL Forged H Beam Conrods
Custom CP Forged Pistons (Rings, Pins and Locks Included)
Cometic MLS Head Gasket
ACL Race Series Main Bearings or King – STD or 0.25mm
ACL Race Series Big End Bearings or King – STD or 0.25mm

These CP forged pistons are a custom piston designed to achieve 9.0:1 compression ratio with the RB25 or RB26 cylinder head, and come std with an upgraded forging designed for extreme boost applications.

Upgraded gudgeon pins are also available – Contact us for pricing
Upgraded Pin options – 9310 – 0.250″(6.25mm), 0.200″(5mm) and 0.180″(4.125mm)

Pistons are available in:

Compression Ratios: 9.0:1
Bore Sizes: 86.5mm
Pistons come with rings, gudgeon pins and pin locks

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

CP Pistons features include:

9310 gudgeon pins with thicker 5mm walls
Deep valve reliefs accommodate high lift camshafts
Larger valve reliefs for +1mm valve sizes
Custom skirt cam and barrel design
Accumulator grooves
High strength aluminium forgings
High performance rings
Fully CNC machined and balanced to +/- 1 gram
Wrist pins included
Double pin oilers force fed from oil ring groove
Pick lock grooves for easy lock removal
Pin fitting included