Nitto Forged Pistons
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Nitto Forged Pistons - Nissan RB25DET NEO - Skyline (R34) / Stagea (WC34)
A set of six forged pistons for the Nissan RB25DET NEO found in the R34 Skyline GT-T and series 2 Stagea. They are made for a rebuilt standard-stroke NEO bottom end, whether the car is a quick street build or a dedicated drag or circuit car.
This set is made in one size: 86.5 mm, a 0.020" oversize, with a +7 cc dome. Your engine builder will need to bore and hone the block to suit.
Every Nitto piston is produced by CP Carrillo in the USA to Nitto's own specification. They are forged from CP's low-silicon 2618 alloy in the Turbo HD forging, paired with a PVD-coated ring set for tight bore sealing under boost, and fitted with CP's 9310 wrist pins, which are Rockwell tested, case hardened and cryogenically treated.
Note: Installation by a professional is recommended. Engine internals must be measured and set up by a qualified engine builder.
Features
- Forged from low-silicon 2618 aluminium, Turbo HD forging
- Made by CP Carrillo to Nitto's specification
- PVD-coated ring set for strong bore sealing and low friction
- 9310 wrist pins (0.827" diameter, 2.500" long), 100% Rockwell tested, case hardened and cryo treated
- Forced double pin oiling to keep the wrist pin lubricated
- Anti-detonation grooves to help protect the top ring
- Accumulator grooves to reduce top ring flutter and improve ring seal
Kit Contents
- 6 x Nitto / CP Carrillo forged pistons
- 6 x PVD-coated ring sets
- 6 x 9310 wrist pins
Warranty
Nitto parts are made for racing and off-road use. Check every part during assembly and blueprinting, and contact us before fitting if anything measures out of tolerance. Nitto will repair or replace a defective part at its option, and any modification voids the warranty. Full terms: Nitto limited warranty (PDF).
Pairs Well With
- Nitto Forged Stroker Pistons - Nissan RB25DET NEO - Skyline (R34) / Stagea (WC34)
- Nitto H-Beam Connecting Rods - Nissan RB25DET / RB26DETT - Skyline / Skyline GT-R (R32 / R33 / R34) / Stagea (WC34)
- Nitto I-Beam Connecting Rods - Nissan RB25DET / RB26DETT - Skyline / Skyline GT-R (R32 / R33 / R34) / Stagea (WC34)
- Nitto Engine Gasket Kit - Nissan RB25DET NEO - Skyline (R34) / Stagea (WC34)
Shop more: Nitto
Need help choosing parts? Contact our team at sales@chicaneaustralia.com.au.
Vehicle Compatibility
| Make | Model | Chassis | Years | Engine / Notes |
|---|---|---|---|---|
| Nissan | Skyline GT-T | R34 (ER34) | 1998–2001 | RB25DET NEO (Japanese import) |
| Nissan | Stagea | WC34 | 1998–2001 | RB25DET NEO (Japanese import, series 2) |
Technical Specifications
| Spec | Value |
|---|---|
| Brand | Nitto |
| Product | Forged pistons (set of 6) |
| Engine | Nissan RB25DET NEO |
| Bore | 86.5 mm (+0.020") |
| Dome | +7 cc |
| Piston material | 2618 aluminium |
| Forging | Turbo HD |
| Ring type | PVD coated |
| Pin diameter | 0.827" |
| Pin length | 2.500" |
| Pin wall | 0.200" standard (0.250" optional) |
| Pin material | 9310 standard (300M optional) |
| Warranty | Nitto limited warranty (racing use) |
| Instructions | Nitto installation notes (link below) |
| Part number(s) | NIT-CP-RB25NEO20 |
Contents
1 x set of 6 Nitto forged pistons with PVD-coated ring sets and 9310 wrist pins

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