The CP Pistons Piston & Ring Set for the Honda F20C (SC7065-4) is a purpose-built forged piston kit designed specifically for the F20C engine found in the Honda S2000. Built to an 87mm bore at standard (STD) sizing with a 10.0:1 compression ratio, this set from CP Pistons is a go-to choice for S2000 owners looking to restore or upgrade their rotating assembly with a high-quality, precision-engineered component. Whether you're refreshing a high-mileage F20C or building a performance street engine, this kit delivers the dimensional accuracy and material quality CP Pistons is known for in the motorsport world.
Key Features & Benefits
- Purpose-Built for the Honda F20C: Engineered specifically for this engine, the SC7065-4 ensures proper fit in the F20C's bore, eliminating the guesswork and fitment risk that comes with universal or adapted piston sets.
- 87mm Standard Bore Diameter: Designed for standard (STD) bore sizing, making this an ideal replacement set for engines that have not been overbored — perfect for refreshes where the block measures within factory spec.
- 10.0:1 Compression Ratio: This lower compression ratio variant (compared to the stock F20C's higher compression) gives builders flexibility — particularly useful for applications where fuel quality, forced induction plans, or reliability goals call for a more conservative compression target.
- CP Pistons Engineering: CP Pistons is a well-regarded name in the motorsport and performance engine building community, known for producing forged pistons with tight tolerances that support reliable, high-performance engine builds.
- Complete Piston & Ring Set: Includes both pistons and rings, so you have the core rotating assembly components needed for a proper engine rebuild without sourcing rings separately.
- Precision Fitment for Optimal Performance: Correct piston-to-wall clearance and ring seal are critical to compression retention, oil control, and long-term durability — this set is spec'd specifically for the F20C to support all three.
Specifications
- Brand: CP Pistons
- Part Number: SC7065-4
- SKU: CPPSC7065-4
- Application Engine: Honda F20C
- Bore Size: 87mm
- Size: STD (Standard)
- Compression Ratio: 10.0:1
- Quantity: 4-cylinder set (pistons & rings)
- CARB Status: Not CARB legal — not for sale in California
Fitment
This CP Pistons set is designed specifically for the Honda F20C engine, which was used in the Honda S2000 (AP1 chassis). The F20C is a 2.0-liter inline-four that powered the S2000 in its earlier production years. This particular set is sized at 87mm STD bore, meaning it is intended for engines that are at standard (un-bored) bore dimensions.
Important: This set is not the same as the F22C application (used in later AP2 S2000 models). If your S2000 is equipped with an F22C engine, you will need a different part number. Additionally, this set is not for sale in California due to CARB regulations. Always confirm your engine code before ordering — contact our team if you need help verifying fitment.
What's in the Box
- 4 CP forged pistons (sized for Honda F20C, 87mm STD bore)
- Corresponding ring set for all 4 cylinders
Why Buy from ThreePiece.us
- Free Shipping: Every order ships free — no minimum required, no hidden freight charges at checkout.
- Affirm Financing: Split your purchase into manageable monthly payments through Affirm, so you can get your build moving without waiting.
- Expert Fitment Support: Our team has served 10,000+ customers and specializes in helping enthusiasts get the right part the first time. If you're unsure whether this is the correct piston set for your F20C build, reach out before ordering — we're here to help.
- Experienced Team: ThreePiece.us has been serving performance enthusiasts since 2014, with deep expertise across engine components, wheels, suspension, and more.
- Reach Us Directly: Call 813-535-5801 or email [email protected] for personalized support on your order.
Frequently Asked Questions
Q: Does this piston set fit both the F20C and F22C engines?
A: No. Part number SC7065-4 is specifically designed for the Honda F20C engine. The F22C (used in later Honda S2000 AP2 models) requires a different piston set. CP Pistons does offer separate F20C/F22C combination fitments under different part numbers, but SC7065-4 is an F20C-specific application. Always confirm your engine code before ordering.
Q: This says STD bore — can I use it if my block has been bored out?
A: STD (standard) sizing means these pistons are dimensioned for a factory, un-machined 87mm bore. If your F20C block has been overbored, you will need oversized pistons matched to your machined bore dimension. We recommend having your block measured by a machine shop before ordering to confirm the correct size.
Q: Why does this set have a 10.0:1 compression ratio instead of the stock F20C ratio?
A: CP Pistons offers the F20C application at multiple compression ratios to support different build goals. A 10.0:1 ratio gives engine builders a lower-compression option compared to the stock F20C specification, which can be beneficial for builds targeting added reliability, accommodating lower-octane fuel, or leaving headroom for future forced induction. This is a deliberate spec choice, not a mismatch.
Q: Is this product available to ship immediately?
A: Stock levels are listed on the product page at ThreePiece.us. The listing notes this as a regularly stocked product, but inventory is limited — check current availability when ordering. If you have lead time questions, contact our team at 813-535-5801 before placing your order.
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