{"product_id":"honda-trx450r-490cc-big-bore-top-end-rebuild-kit","title":"TRX450R TRX 450R 450ER Big Bore Kit 100 mil Cylinder Complete Top End Rebuild","description":"\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 0.000001px; color: transparent;\"\u003eHonda TRX450R TRX450ER 100mm 490cc 488cc Big Bore Kit complete top end rebuild with Nikasil cylinder, forged 13:1 piston, Cometic MLS gasket kit, timing chain and titanium stud kit.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"max-width: 800px; margin: 0 auto; font-family: Arial,Helvetica,sans-serif; line-height: 1.5; color: #222;\"\u003e\n\u003ch2 style=\"text-align: center; font-size: 26px; margin: 0 0 12px 0;\"\u003e\u003cstrong\u003eHonda TRX450R TRX450ER 100mm 490cc Big Bore Complete Top End Rebuild Kit 2006-2014\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3 style=\"color: #c00; margin: 20px 0 6px; text-align: center;\"\u003e📖 Product Description\u003c\/h3\u003e\n\u003cp style=\"text-align: center; margin: 0 20px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e Take your \u003cstrong\u003eHonda TRX450R or TRX450ER\u003c\/strong\u003e to the next level with this complete \u003cstrong\u003e100mm 490cc \/ 488cc Big Bore Top End Rebuild Kit\u003c\/strong\u003e. Designed for riders demanding maximum performance and reliability, this premium package combines a high-quality \u003cstrong\u003eNikasil plated big bore cylinder\u003c\/strong\u003e, your choice of a \u003cstrong\u003eCP Carrillo or JE 13:1 forged piston\u003c\/strong\u003e, a \u003cstrong\u003eCometic MLS top end gasket kit\u003c\/strong\u003e, \u003cstrong\u003eBPRATV Heavy Duty Timing Chain\u003c\/strong\u003e, and a \u003cstrong\u003eBPRATV Talon Titanium Stud Kit\u003c\/strong\u003e into one complete performance solution.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center; margin: 0 20px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center; margin: 0 20px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e Whether you're refreshing a worn engine or building a race-ready machine, this kit delivers increased displacement, stronger acceleration, improved throttle response, and exceptional durability. The 13:1 compression ratio is engineered to work with \u003cstrong\u003epump gas or race fuel\u003c\/strong\u003e, making it an outstanding upgrade for aggressive trail riders, dune riders, and competitive racers alike. \u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 style=\"color: #c00; margin: 20px 0 6px; text-align: center;\"\u003e🔥 Key Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003e100mm Nikasil plated big bore cylinder\u003c\/strong\u003e increases displacement to approximately 490cc \/ 488cc.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003eCP Carrillo or JE 13:1 forged piston kit\u003c\/strong\u003e for outstanding strength and long service life.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003eForged piston kit includes \u003cstrong\u003episton, wrist pin, piston rings, and circlips.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003eWorks with pump gas or race gas.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003eCometic MLS Big Bore head gasket\u003c\/strong\u003e provides superior sealing under high cylinder pressures.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003eCometic complete top end gasket kit\u003c\/strong\u003e ensures a leak-free installation.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003eBPRATV Heavy Duty OEM Replacement Timing Chain\u003c\/strong\u003e offers dependable long-term reliability.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003eBPRATV Talon Titanium Cylinder Stud Kit\u003c\/strong\u003e increases clamping strength while reducing weight.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003eBrand new components backed by each manufacturer's warranty.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003eRace Use Only.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #c00; margin: 20px 0 6px; text-align: center;\"\u003e📦 Product Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003e100mm Nikasil Big Bore Cylinder (1-Year Manufacturer Warranty)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003eCP Carrillo 13:1 Forged Piston Kit \u003cstrong\u003eor\u003c\/strong\u003e JE 13:1 Forged Piston Kit\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003eForged Piston\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003ePiston Rings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003eWrist Pin\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003ePiston Circlips\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003eCometic Complete Top End Gasket Kit\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003eCometic MLS Big Bore Head Gasket\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003eBPRATV Heavy Duty OEM Replacement Timing Chain\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003eBPRATV Talon Titanium Cylinder Stud Kit\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #c00; margin: 20px 0 6px; text-align: center;\"\u003e✅ Compatibility\u003c\/h3\u003e\n\u003cp style=\"text-align: center; margin: 0 20px;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e Fits the following Honda sport ATV models: \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003eHonda TRX450R (2006-2014)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003eHonda TRX450ER (2006-2014)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003eDesigned for 100mm 490cc \/ 488cc big bore engine builds.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #c00; margin: 20px 0 6px; text-align: center;\"\u003e❓ Frequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this kit include everything needed for a complete top end rebuild?\u003c\/span\u003e\n\u003cp style=\"text-align: left; margin: 0 0 10px 0;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. This package includes the cylinder, forged piston kit, complete Cometic top end gasket kit with MLS head gasket, heavy-duty timing chain, and titanium stud kit.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this work with pump gasoline?\u003c\/span\u003e\n\u003cp style=\"text-align: left; margin: 0 0 10px 0;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. The included 13:1 forged piston is designed to operate with either premium pump fuel or race gasoline depending on your engine setup and tuning.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Which piston brand is included?\u003c\/span\u003e\n\u003cp style=\"text-align: left; margin: 0 0 10px 0;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Depending on inventory, the kit includes either a premium CP Carrillo 13:1 forged piston kit or a JE 13:1 forged piston kit.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this intended for racing?\u003c\/span\u003e\n\u003cp style=\"text-align: left; margin: 0 0 10px 0;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. This performance package is intended for closed-course competition and racing applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #c00; margin: 20px 0 6px; text-align: center;\"\u003e🌟 Why Buy from BPRATV\u003c\/h3\u003e\n\u003cp style=\"color: rgb(34, 34, 34); text-align: center;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e At \u003cstrong\u003eBPRATV\u003c\/strong\u003e, our promise is unwavering: \u003cstrong\u003eThe Best Parts. The Best Performance. The Best Price.\u003c\/strong\u003e We specialize in high-performance powersports components trusted by riders and builders who demand reliability and results. Every part is carefully selected for precision, durability, and real-world performance. Trust BPRATV to keep your \u003cstrong\u003eHonda TRX450R \/ TRX450ER\u003c\/strong\u003e running at its best, \u003cstrong\u003eevery single time.\u003c\/strong\u003e \u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\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\u003eUpgrade your Honda TRX450R with race-proven big bore performance--order your complete rebuild kit today!\u003c\/em\u003e\u003c\/strong\u003e \u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"color: #0000ff; font-size: 16px;\"\u003e \u003cstrong\u003eBPRATV - The Best Parts. The Best Performance. The Best Price.\u003cbr\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong style=\"color: rgb(0, 0, 255); font-size: 16px;\"\u003eBRAPPPPPPPPPP!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center; font-size: 10px; color: #555; margin: 20px 0 0px;\"\u003e© BPRATV LLC\u003cbr\u003e\u003cbr\u003eDue 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.\u003cbr\u003e\u003cbr\u003eThis 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. This product is sold only for use in connection with EPA-certified, purpose-built, nonroad vehicles used solely for closed-course, nonroad competition\/racing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!--\n\n10 eBay Titles\n\nHonda TRX450R TRX450ER 490cc 100mm Big Bore Top End Rebuild Kit CP JE 2006-2014\n2006-2014 Honda TRX450R 490cc Big Bore Cylinder Top End Rebuild Kit Titanium Stud\nHonda TRX450ER 100mm Big Bore Cylinder Kit 13:1 Forged Piston Top End Rebuild\nTRX450R 490cc Big Bore Kit Nikasil Cylinder CP JE Piston Cometic Gaskets 06-14\nHonda TRX450R Complete 100mm Big Bore Top End Kit Timing Chain Titanium Stud Kit\nTRX450ER 488cc Big Bore Rebuild Kit Nikasil Cylinder Forged Piston Cometic MLS\nHonda TRX450R 100mm Cylinder 490cc Big Bore Complete Engine Top End Rebuild Kit\nPerformance Honda TRX450R 490cc Big Bore Kit CP JE Piston Titanium Studs 06-14\nHonda TRX450ER 13:1 Forged Piston Big Bore Cylinder Kit Complete Top End 2006-2014\nTRX450R TRX450ER 100mm Big Bore Complete Rebuild Kit Nikasil Cylinder 490cc\n\n10 eBay Keywords\n\ntrx450r big bore kit\ntrx450er big bore kit\ntrx450r 490cc kit\ntrx450r top end rebuild\ntrx450r cylinder kit\ntrx450r forged piston\ntrx450r 100mm cylinder\ntrx450r timing chain\ntrx450r titanium stud kit\ntrx450r cometic gasket kit\n\n10 SEO Keywords\n\nHonda TRX450R 490cc big bore kit\nHonda TRX450ER 100mm cylinder kit\nTRX450R complete top end rebuild kit\nTRX450R forged piston kit\nTRX450R Nikasil cylinder\nTRX450R Cometic MLS gasket kit\nTRX450R heavy duty timing chain\nHonda TRX450R performance rebuild\nTRX450ER 13 to 1 piston kit\nHonda TRX450R race engine kit\n\n10 Meta Titles\n\nHonda TRX450R 490cc Big Bore Top End Rebuild Kit 2006-2014\nTRX450ER 100mm Big Bore Cylinder Kit with Forged Piston\nHonda TRX450R Complete 490cc Big Bore Engine Kit\nTRX450R 13:1 Forged Piston Top End Rebuild Kit\nHonda TRX450R Nikasil Big Bore Cylinder Kit\nTRX450ER Complete Top End Performance Kit\nHonda TRX450R Big Bore Cylinder and Piston Kit\nTRX450R Cometic MLS Gasket Rebuild Kit\nHonda TRX450ER 490cc Performance Upgrade Kit\nTRX450R Race Ready Big Bore Engine Rebuild Kit\n\n10 Meta Descriptions\n\nUpgrade your Honda TRX450R with a complete 490cc big bore top end rebuild kit featuring a 100mm Nikasil cylinder, forged piston, Cometic MLS gaskets, timing chain and titanium studs.\nComplete TRX450ER big bore kit includes a 100mm cylinder, CP or JE forged piston, Cometic gasket kit, heavy-duty timing chain and titanium stud kit for reliable performance.\nBoost power and reliability with this Honda TRX450R 490cc big bore rebuild kit engineered for racing and high-performance riding.\nPremium Honda TRX450ER top end rebuild kit featuring a Nikasil cylinder, forged 13:1 piston, MLS head gasket and timing chain for maximum durability.\nHonda TRX450R performance engine rebuild kit with forged piston, 100mm cylinder and titanium studs for aggressive riding applications.\nBuild your Honda TRX450R race engine with this complete 490cc big bore kit including Cometic gaskets and premium forged piston components.\nComplete Honda TRX450ER 100mm top end rebuild package for 2006-2014 models with premium performance components.\nIncrease displacement and horsepower with this TRX450R big bore cylinder kit featuring a forged piston and heavy-duty timing chain.\nHonda TRX450R 488cc big bore performance rebuild kit designed for superior sealing, durability and dependable power.\nEverything needed for a premium Honda TRX450R top end rebuild including Nikasil cylinder, forged piston and Cometic MLS head gasket.\n\nSEO URL Handles\n\nhonda-trx450r-490cc-big-bore-top-end-rebuild-kit\ntrx450er-100mm-big-bore-cylinder-forged-piston-kit\nhonda-trx450r-complete-big-bore-performance-kit\ntrx450r-490cc-engine-top-end-rebuild-kit\nhonda-trx450er-big-bore-cylinder-timing-chain-kit\n\n--\u003e\u003cmeta name=\"keywords\" content=\"Honda TRX450R 490cc big bore kit Honda TRX450ER 100mm cylinder kit TRX450R complete top end rebuild kit TRX450R forged piston kit TRX450R Nikasil cylinder TRX450R Cometic MLS gasket kit TRX450R heavy duty timing chain Honda TRX450R performance rebuild TRX450ER 13 to 1 piston kit Honda TRX450R race engine kit\"\u003e\u003cmeta name=\"description\" content=\"Complete Honda TRX450ER 100mm top end rebuild package for 2006-2014 models with premium performance components.\"\u003e","brand":"BPRATV","offers":[{"title":"Default Title","offer_id":46522301087941,"sku":"255047449168\/TRX100MM\/M2054\/C3156\/3SHD","price":788.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/1083\/3861\/files\/product-img-255047449168_trx100mm_m2054_c3156_3shd-0-1634167b-58b7-4483-a1ce-25c92e0abc7d.jpg?v=1783713155","url":"https:\/\/bpratv.com\/products\/honda-trx450r-490cc-big-bore-top-end-rebuild-kit","provider":"BPRATV","version":"1.0","type":"link"}