Pro Circuit T-4 Exhaust System 4H00070 - Honda XR70R / CRF70F 1998-2012

Product Description

The Pro Circuit T-4 Exhaust System is engineered to deliver lightning-quick throttle response and improved power delivery for your Honda mini pit bike. Extensively track- and dyno-tested, this 1-into-1 full system is built to optimize overall performance across the entire RPM range.

Constructed with a durable brushed aluminum muffler, stainless steel components, and a conical stainless steel end cap, the T-4 system features exclusive E-glass pillow packing for long-lasting sound absorption. It also includes steel Allen head screws for easy repacking and a USFS-approved spark arrestor that can be removed for closed-course racing.

Top Features: Pro Circuit T-4 Exhaust System

• Advanced 1-into-1 design ensures lightning-quick throttle response
• Extensively track- and dyno-tested for verified performance improvements
• Equipped with steel Allen head screws to make routine muffler repacking a straightforward task
• Utilizes exclusive E-glass pillow packing for optimal sound dampening
• Includes a USFS-approved spark arrestor that is fully removable for closed-course racing

Please review the detailed compatibility data below to ensure an exact fitment match for your dirt bike before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: Is the spark arrestor removable on this exhaust system?
A: Yes, it includes a USFS-approved spark arrestor that can be removed when riding in closed-course racing environments.

Q: Does this come as a complete system including the header pipe?
A: Yes, the T-4 system is a complete 1-into-1 full exhaust package designed to replace both the header and muffler assembly.

Expert Pro-Tip: When installing a new full exhaust system, always use new gaskets at the cylinder head, apply a high-temperature silicone sealant to slip-joints to prevent exhaust leaks, and leave all flange nuts and mounting bolts loose until the entire system is properly aligned.

Recommended Pairings:

• Honda Mini Pit Bike Upgrades & Accessories
• Honda 4-Stroke Performance Parts & Upgrades
• Engine Rebuild Kits & Components

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