Nissan RB25 NEO Spool H Beam Conrods and CP Forged Pistons
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Spool RB25 NEO Forged Connecting Rods and CP Forged Pistons.
Pistons are available in:
- Compression Ratio: 9.0:1
- Bore Sizes: STD, +0.5mm and 1mm
- 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 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.
| Product Name | Nissan RB25 NEO Spool H Beam Conrods and CP Forged Pistons |
|---|---|
| Brands | Spool |
| Engine | RB25 NEO |
| Make | Nissan |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
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Disclaimer:
Product images are for description purposes only. Actual product may vary.
Shipping calculations available at checkout.
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What is included in a typical Spool engine kit?
Kits usually include pistons, rings, rods, bearings and related hardware depending on the engine family. Check the listing for exact inclusions.
Do I still need machining with a full engine kit?
Yes. The block must be honed and all clearances checked and set by your builder. Assembly should only occur after full measurement and verification.
What is the recommended compression ratio for the CP pistons in the RB25 NEO kit?
The CP pistons in the Spool RB25 NEO kit have a compression ratio of 9.0:1. This is suitable for a range of performance applications, but ensure that your engine's tuning and fuel quality match this specification for optimal performance.
What bore sizes are available for the CP pistons in this kit?
The CP pistons in the Spool RB25 NEO kit are available in standard, +0.5mm, and +1mm bore sizes. It's crucial to select the correct size based on your engine's current bore condition and any planned machining.
What type of fasteners are used in the Spool RB25 NEO conrods?
The Spool RB25 NEO conrods come standard with ARP2000 fasteners. If you require higher strength, L19 fasteners are available as an upgrade. Always follow ARP's latest instructions for proper torque or stretch specifications during installation.
Do the CP pistons come with all necessary components for installation?
Yes, the CP pistons in the Spool RB25 NEO kit come complete with rings, gudgeon pins, and pin locks. Ensure that you follow proper installation procedures for these components to achieve the best performance.
What machining considerations should I keep in mind when using this engine kit?
When using the Spool RB25 NEO conrods and CP pistons, be aware that you may need to hone the big-end or small-end of the conrods for proper fitment. Additionally, ensure that the piston bore clearance and ring gaps are set correctly according to your engine's specifications and intended use.
