{"product_id":"wiseco-87mm-big-bore-cylinder-piston-cometic-gasket-kit-honda-400ex-400x-xr400","title":"Wiseco 87mm Big Bore Cylinder Piston \u0026 Cometic Gasket Kit Honda 400EX 400X XR400","description":"\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 0.000001px; color: transparent;\"\u003e4628M08700, C7826, 4606M08700, M2001, 133889, Upgrade your Honda 400EX, 400X, or XR400R with this Wiseco 87mm 416cc Big Bore Piston \u0026amp; Cometic Gasket Kit. Boosts power, durability, and reliability. Fits all years.\u003c\/span\u003e\u003c\/p\u003e \u003cdiv style=\"max-width:800px;margin:0 auto;font-family:Arial,Helvetica,sans-serif;line-height:1.5;color:#222;\"\u003e \u003ch2 style=\"text-align:center;font-size:26px;margin:0 0 12px 0;\"\u003e \u003cstrong\u003eHonda 400EX 400X XR400 Wiseco 87mm 416 Big Bore Cylinder Piston Gasket Kit\u003c\/strong\u003e \u003c\/h2\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e⚡ Upgrade Your 400EX, 400X, or XR400R to 416cc Power ⚡\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eThis complete \u003cstrong\u003eWiseco 87mm 416cc Big Bore Kit\u003c\/strong\u003e includes a forged 11:1 compression piston and a premium Cometic top end gasket kit. Built to deliver more horsepower, torque, and durability, it is the ultimate upgrade for riders looking to push their Honda engine beyond stock performance levels.\u003c\/span\u003e\u003c\/p\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e🔧 Kit Features \u0026amp; Benefits 🔧\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eEverything you need to refresh and upgrade your top end is included, backed by American-made quality from Wiseco and Cometic.\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003e87mm 11:1 Wiseco Forged Piston Kit\u003c\/strong\u003e (piston, rings, wrist pin, circlips)\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eCometic Top End Gasket Kit\u003c\/strong\u003e with big bore MLS head gasket\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eMLS Head Gasket\u003c\/strong\u003e thickness: .027\"\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eImproves power delivery, throttle response, and reliability\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eMade in the USA by Wiseco \u0026amp; Cometic\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e✅ Fitment Compatibility ✅\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eDesigned to fit all Honda 400EX, 400X, and XR400R models and years. Direct bolt-on upgrade for stock or modified builds.\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eHonda TRX400EX Sportrax\u003c\/strong\u003e (1999-2008)\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eHonda TRX400X\u003c\/strong\u003e (2009, 2012-2014)\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eHonda XR400R\u003c\/strong\u003e (1996-2004)\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eReplaces OEM Part Numbers: 12251-MBV-013, 12251-MBV-003, 12251-KCY-671, 12251-HN1-A41, 12251-HN1-003, 12191-KCY-673, 12191-KCY-672, 12191-KCY-671, 12191-HN1-A71, 13103-KCY-670, 13102-KCY-670, 13101-KCY-670, and more\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eWiseco Part #: 4628M08700 | Cometic Part #: C7826\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e❓ Frequently Asked Questions (FAQ) ❓\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: Does this kit require machining?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: No, it is a direct bolt-on kit designed for the stock cylinder with a 87mm bore size.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: What compression ratio does this piston offer?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: This Wiseco piston delivers an 11:1 compression ratio for stronger performance while maintaining reliability.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: Will this work with pump gas?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: Yes, 11:1 compression is safe for use with premium pump gas when tuned correctly.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003c\/ul\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e🌟 Why Buy from BPRATV? Trusted Performance Experts 🌟\u003c\/h3\u003e \u003cp style=\"text-align:center;margin:0 20px;\"\u003e \u003cspan style=\"font-size:16px;\"\u003eAt BPRATV, our promise is unwavering: \u003cstrong\u003eThe Best Parts. The Best Performance. The Best Price.\u003c\/strong\u003e We stock only the highest quality performance parts, proven to give your machine more power and durability. Trust BPRATV to deliver exactly what you need, \u003cstrong\u003eevery single time\u003c\/strong\u003e.\u003c\/span\u003e \u003c\/p\u003e\n\u003cp style=\"text-align:center;margin:0 20px;\"\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp style=\"text-align:center;margin:0 20px;\"\u003e \u003cspan style=\"color:#38761d;font-size:16px;\"\u003e\u003cstrong\u003e\u003cem\u003e🔥 Upgrade your 400EX, 400X, or XR400R today with this complete Wiseco 416 Big Bore Piston \u0026amp; Gasket Kit – order now and ride stronger! 🔥\u003c\/em\u003e\u003c\/strong\u003e\u003c\/span\u003e \u003c\/p\u003e\n\u003cp style=\"text-align:center;margin:0 20px;\"\u003e\u003cspan style=\"color:#38761d;font-size:16px;\"\u003e\u003cstrong\u003e\u003cem\u003e\u003cbr\u003e\u003c\/em\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp style=\"text-align:center;margin:0 20px;\"\u003e \u003cspan style=\"color:#0000ff;font-size:16px;\"\u003e\u003cstrong\u003eBPRATV - The Best Parts. The Best Performance. The Best Price.\u003c\/strong\u003e\u003c\/span\u003e \u003c\/p\u003e \u003cp style=\"text-align:center;margin:0 20px;\"\u003e \u003cspan style=\"color:#0000ff;font-size:16px;\"\u003e\u003cstrong\u003eBRAPPPPPPPPPP!\u003c\/strong\u003e\u003c\/span\u003e \u003c\/p\u003e \u003cp style=\"text-align:center;font-size:10px;color:#555;margin:20px 0 0px;\"\u003e© BPRATV 1-year limited warranty from the manufacturer for material or workmanship defects.* Due to the nature of high performance and racing applications, BPRATV LLC components are sold without express warranty or any implied warranty of merchantability or fitness for a specific purpose. BPRATV LLC shall not, under any circumstances, be liable for any specific, incidental or consequential damages, including, but not limited to, damage, or loss of property or equipment, loss of profits or revenue(s), cost of purchased or replacement goods, or claims of customers of the purpose, which may arise and\/or shall result from sale, installation or use of these parts. Installation of these parts may void vehicle manufacturers warranty coverage and\/or may cause the vehicle to be illegal in some locations. This product is exempt from the emission standards and related requirements of 40 C.F.R. § 1051 as provided by 40 C.F.R. § 1051.620, and California law [e.g., vehicle code§§ 27156 and 38391]. This product is sold only for use in connection with EPA -certified, purpose-built, nonroad vehicles used solely for closed course, nonroad competition\/racing and not used for any recreational purpose or on public highways or right of ways maintained by and open to the public. This product is sold only in connection with machines that do not fall under state and\/or federal noise or emission standards\/regulations. Purchasers who\/that purchase this product represent and warrant that the product is purchased only in connection with EPA -certified, emission-regulations-exempt and noise-regulations-exempt competition\/racing vehicles as interpreted under applicable state and\/or federal law. \u003c\/p\u003e \u003c\/div\u003e","brand":"Wiseco","offers":[{"title":"Default Title","offer_id":45131969396933,"sku":"257122834831\/4628M08700\/C7826\/JT","price":218.88,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/1083\/3861\/files\/honda-400ex-400x-wiseco-87mm-416-big-bore-cylinder-4628m08700-piston-top-gasket-kit-2_57e71d90-1ef1-4b90-aa11-da39f51606d3.png?v=1758763469","url":"https:\/\/bpratv.com\/products\/wiseco-87mm-big-bore-cylinder-piston-cometic-gasket-kit-honda-400ex-400x-xr400","provider":"BPRATV","version":"1.0","type":"link"}