Specifications
- Brand
- Big Gun
- Part #
- 40-R01
- UPC
- 40-R01

Big Gun 99-04 Honda TRX 400EX Rev Box
$138.16
Big Gun 99-04 Honda TRX 400EX Rev Box. Increases RPM limit and advances timing for improved performance.
Key Features
- Fits 1999-2004 Honda TRX 400EX.
- Replaces the stock CDI box with an easy, direct plug-in installation.
- Increases the overall RPM limit of the engine.
- Advances the ignition timing curve for improved performance.
- Covered by a 6-month limited warranty.
Product Details
Big Gun is known for making performance exhaust systems for ATVs and dirt bikes. If you're looking to get a little more out of your 1999-2004 Honda TRX 400EX, their Over Rev Box is a solid option that won't break the bank.
This rev box is designed to replace your stock CDI box. It's a direct plug-in replacement, meaning you won't need to do any wiring modifications. The main benefit is that it raises the overall RPM limit, letting your engine spin faster than it would with the stock unit. It also advances the timing curve, which can help improve throttle response and overall power delivery.
Keep in mind that this part is not CARB approved and cannot be shipped to California. It comes with a 6-month limited warranty from Big Gun.
Specifications
- Brand
- Big Gun
- Manufacturer Part #
- 40-R01
- UPC
- 40-R01
Frequently Asked Questions
Big Gun 99-04 Honda TRX 400EX Rev Box
