Big Gun Exhaust 40-R15 Rev Box

Big Gun Exhaust 40-R15 Rev Box

If you are looking to swap out the stock CDI box on your Honda XR 400, the Big Gun Over Rev Box is an affordable alternative to highly-priced OEM replacement boxes. It increases the overall RPM limit over the stock box and advances the timing curve.

• Increases overall RPM limit
• Advanced timing curve
• Easy direct plug in replacement to stock CDI box
• 6 Month Limited Warranty

Big Gun Exhaust 40-R15 Fitment:

• Honda XR 400 (99-04)

If you are looking to swap out the stock CDI box on your Honda XR 400, the Big Gun Over Rev Box is an affordable alternative to highly-priced OEM replacement boxes. It increases the overall RPM limit over the stock box and advances the timing curve.

• Increases overall RPM limit
• Advanced timing curve
• Easy direct plug in replacement to stock CDI box
• 6 Month Limited Warranty

Big Gun Exhaust 40-R15 Fitment:

• Honda XR 400 (99-04)