SKU: SC73241-4
CP Piston & Ring Set for 1989-1998 Nissan 240SX SR20DE/DET - Bore 86mm - Size STD - CR 8.5
CP forged piston and ring set SC73241-4 fits Nissan SR20DE/DET engines in 1989-1998 240SX models. This 86mm bore standard size kit with 8.5:1 compression ratio handles turbocharged builds by controlling detonation and heat. Kit includes rings pins and clips for direct replacement in performance engine rebuilds weighing 4 lbs total.
Key Features
- Forged 2618-T61 Alloy: High-strength material resists fatigue and cracking under extreme boost pressures up to 40 psi
- 8.5:1 Compression Ratio: Matches turbo SR20DET applications while working with stock DE setups
- Accumulator Groove: Reduces ring flutter at high RPM for consistent sealing and power delivery
- Anti-Detonation Grooves: Prevents hot spots and pre-ignition in boosted setups
- Skirt and Top Coatings: Armor-Glidez skirt reduces friction and ceramic top coating improves heat dissipation
Product Notes
- Requires cylinder honing to 86.00-86.02mm and piston to wall clearance check of 0.003-0.004 inch
- Rod length 137.9mm stroke 86mm compression height 30.25mm verify engine specs before install
- Ships in protective foam packaging weighs 4 lbs total
Installation Notes
- Professional installation recommended.
- Balance rotating assembly after piston install
- Compatible with stock or aftermarket rods includes wrist pins and double spiro locks
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1989-1990 | Nissan | 240SX | XE |
| 1989-1998 | Nissan | 240SX | SE |
| 1991-1992 | Nissan | 240SX | LE |
| 1991-1993 | Nissan | 240SX | Base |
| 1995-1998 | Nissan | 240SX | Base |
| 1997-1998 | Nissan | 240SX | LE |
Why Choose CP Pistons?
- Proven in NHRA Pro Stock and drifting with thousands of race wins
- Machined to tolerances under 0.0002 inch for perfect fit
- Hand-built in USA with lifetime limited warranty on defects
Frequently Asked Questions
-
Q: Will SC73241-4 fit SR20DE and SR20DET in 240SX swaps?
A: Yes designed for both 2.0L engines bore 86mm stroke 86mm ideal for NA or turbo builds in S13 S14 chassis -
Q: What alloy and coatings are used?
A: 2618-T61 forged alloy with Armor-Glidez moly skirt ceramic top and lateral gas ports for sealing -
Q: What warranty and install support?
A: Lifetime limited warranty includes rings pins clips professional install advised with CP tech sheets
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Secure foam-lined box dimensions 12 x 12 x 6 inches
- Weight: 4 lbs
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