CP Piston & Ring Set for Nissan SR20DE/DET – Bore (86mm) – Size (STD) – CR (8.5)

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