Spool RB25 Drag Pro I Beams and CP Pistons

Spool RB25 Drag Pro I Beam Connecting Rods and CP Forged Pistons.

These CP Forged Pistons are designed for extreme boost applications.

Pistons are available in:

• Compression Ratio: 8.5:1 and 9.0:1
• Bore Sizes: STD, +0.5mm and +1mm
• Pistons come with rings, gudgeon pins and pin locks

Spool Drag Pro I Beam connecting rods are the ultimate high strength direct fit conrod for all Nissan RB25 engines.

With new features like:

• Upgraded ARP2000 7/16 bolts
• Increased strength to the beam
• Increased strength around the fasteners / bolts
• Increased strength around the gudgeon pin

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 standard features include:

• 5310 gudgeon pins (9310 thicker wall thickness pins are available as an upgrade)
• 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

Note: We recommend Joe Gibbs Break in Oil for all new engines.