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- USA
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- USA
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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
Wiseco K634M865 Piston Kit - K24 w/ K20 Cylinder Head +5cc (12.5:1 Compression)Wiseco K634M865 Piston Kit Honda K24 w K20 Cylinder Head +5cc (Comp Ratio 12. 5: 1) Acura Honda K20 RSX S 2002 2006 Always check piston to valve clearance If using VTEC or like mechanisms check with longer duration higher lift lobe Always run at least . 030" piston to head clearance including gasket thickness If piston appears to be different than expected call to verify compatibility Also applicable to Acura Honda K24 & K24 (w K20 Cylinder Head) Most
Wiseco K634M865 Piston Kit - Honda K24 w/ K20 Cylinder Head +5cc (Comp Ratio 12.5:1)Acura / Honda K20 RSX-S 2002-2006
Always check piston to valve clearance
If using VTEC or like mechanisms - check with longer duration higher lift lobe
Always run at least .030" piston to head clearance including gasket thickness
If piston appears to be different than expected call to verify compatibility
Also applicable to Acura / Honda K24 & K24 (w/ K20 Cylinder Head)
Most Wiseco Pistons have an offset pin. Pins must be offset same as OEM for quietest operation. Optional pin upgrade available.
Product Specifications:
Bore Size: 86.50 / 3.405
Oversizes: .020
Stroke: 3.286 / 86
Rod Length: 5.472 / 139
Comp Height: 1.181 / 30
Head cc's: 50.5
Dome Dish: 5
Gasket Thickness: 0.025 / 0.630
Deck Clearance: 0.001- / 0.025-
Block Height: 8.347 / 212
Comp Ratio: 11.08
Pins (included): S618 (22mm)
Ring (included): 8650XX
Wiseco Pistons - Sport Compact Series: Wiseco is world renowned for their work building race winning pistons for compact engines featuring small bores multi-valves and high RPM applications for many years. Wiseco utilizes experience acquired from a diverse background of the most sophisticated engines in such venues as Formula 1 Indy Car Racing NHRA Pro Stock Bike AMA Superbike and AMA Motocross to design and manufacture the highest technology Sport Compact piston available.
Generous Valve Pocket designs that allow maximum flow around valve. Note: Piston to
valve clearance must be checked.
Piston Crown shapes designed to promote maximum Intake Charge efficiency thru
scavenging mixture “Cross Flow" during intake and exhaust valve overlap.
Pistons designed to optimize squish or quench during compression combustion cycle
event resulting in resistance to detonation and pre-ignition.
Complex Piston skirt profiles that reduce power robbing friction yet promote stability in
bore for optimum ring seal.
Precision machined ring grooves with proper orifice / accumulator volume using calculated
groove root diameters and axial widths featuring excellent surface finish and flatness
providing maximum ring seal and minimizes blow-by and oil consumption.
World class forging facility that utilizes the latest technologies featuring complex forged
shapes advanced materials and featured-aligned grain flow technology.
Piston weights listed may vary. All specs based on U.S. engine codes unless noted.
All Sport Compact pistons sold complete with rings pins and clips.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 2321 reviews
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Product Reviews
★★★★★ 5
Looks sharp, concert black, comfortable some stretch
Size: Medium, Color: Black
I bought this for my son to wear at his band concerts, and it’s been perfect. He’s about 5’8” and 155 lbs, and I got him a men’s medium—it fits really well with a comfortable, true-to-size feel.
The quality is excellent: soft, lightweight, and breathable, with just enough stretch so he has the flexibility he needs while playing trombone. It also looks really sharp on stage.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
★★★★★ 5
Great
Size: Medium, Color: Black
The sleeves are exactly how it’s showing on the picture. The size is great. I believe it’s a good value for money. The color is amazing. The quality is great. It’s very light and it’s very comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
★★★★★ 5
Snazzy shirt
Size: Large, Color: Black
Fits great & looks wonderful. Can be worn casually or for work. Very wrinkly, just toss it in the dryer and they will come right out. It's lightweight & cool.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
★★★★★ 4
Great shirts have to iron first
Size: XX-Large Tall, Color: Black
They feel great the material, they’re thin, the style looks good, the length to and below my waist is good. For the cost they’re good shirts and they’re definitely loose fitting, however they shove them in a tight bag so if you plan on wearing this straight away from delivery day make sure you have an iron ready every single collar and I ordered over 7 shirts comes folded over. Took a star away for the fact they don’t pack them how you would find a higher price shirt packed and typically wear ready.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 11, 2025
★★★★★ 5
Simple and nice.
Size: 4X-Large, Color: Dark Grey
Nice shirt. Light weight. It’s true to size and skin friendly because it is cotton.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
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