TRX450R TRX 450R 450ER Big Bore Kit 100 mil Cylinder Complete Top End Rebuild

Honda TRX450R TRX450ER 100mm 490cc Big Bore Complete Top End Rebuild Kit 2006-2014

📖 Product Description

Take your Honda TRX450R or TRX450ER to the next level with this complete 100mm 490cc / 488cc Big Bore Top End Rebuild Kit. Designed for riders demanding maximum performance and reliability, this premium package combines a high-quality Nikasil plated big bore cylinder, your choice of a CP Carrillo or JE 13:1 forged piston, a Cometic MLS top end gasket kit, BPRATV Heavy Duty Timing Chain, and a BPRATV Talon Titanium Stud Kit into one complete performance solution.

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 pump gas or race fuel, making it an outstanding upgrade for aggressive trail riders, dune riders, and competitive racers alike.

🔥 Key Features & Benefits

• 100mm Nikasil plated big bore cylinder increases displacement to approximately 490cc / 488cc.
• CP Carrillo or JE 13:1 forged piston kit for outstanding strength and long service life.
• Forged piston kit includes piston, wrist pin, piston rings, and circlips.
• Works with pump gas or race gas.
• Cometic MLS Big Bore head gasket provides superior sealing under high cylinder pressures.
• Cometic complete top end gasket kit ensures a leak-free installation.
• BPRATV Heavy Duty OEM Replacement Timing Chain offers dependable long-term reliability.
• BPRATV Talon Titanium Cylinder Stud Kit increases clamping strength while reducing weight.
• Brand new components backed by each manufacturer's warranty.
• Race Use Only.

📦 Product Contents

• 100mm Nikasil Big Bore Cylinder (1-Year Manufacturer Warranty)
• CP Carrillo 13:1 Forged Piston Kit or JE 13:1 Forged Piston Kit
• Forged Piston
• Piston Rings
• Wrist Pin
• Piston Circlips
• Cometic Complete Top End Gasket Kit
• Cometic MLS Big Bore Head Gasket
• BPRATV Heavy Duty OEM Replacement Timing Chain
• BPRATV Talon Titanium Cylinder Stud Kit

✅ Compatibility

Fits the following Honda sport ATV models:

• Honda TRX450R (2006-2014)
• Honda TRX450ER (2006-2014)
• Designed for 100mm 490cc / 488cc big bore engine builds.

❓ Frequently Asked Questions

• Q: Does this kit include everything needed for a complete top end rebuild?

  A: 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.

• Q: Will this work with pump gasoline?

  A: 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.

• Q: Which piston brand is included?

  A: Depending on inventory, the kit includes either a premium CP Carrillo 13:1 forged piston kit or a JE 13:1 forged piston kit.

• Q: Is this intended for racing?

  A: Yes. This performance package is intended for closed-course competition and racing applications.

🌟 Why Buy from BPRATV

At BPRATV, our promise is unwavering: The Best Parts. The Best Performance. The Best Price. 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 Honda TRX450R / TRX450ER running at its best, every single time. 

Upgrade your Honda TRX450R with race-proven big bore performance--order your complete rebuild kit today! 

BPRATV - The Best Parts. The Best Performance. The Best Price.
BRAPPPPPPPPPP!

© BPRATV LLC

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. This product is sold only for use in connection with EPA-certified, purpose-built, nonroad vehicles used solely for closed-course, nonroad competition/racing.