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Big Gun Exhaust Rev Boxes

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Big Gun Exhaust rev boxes are direct plug-in replacements for your stock CDI boxes. They offer an affordable alternative to highly-priced OEM replacement boxes with performance benefits. An advanced timing curve paired with increased overall rpm limit will bring your ride to life. Big Gun Exhaust rev boxes are available for various off-road motocross bikes and ATVs.

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Big Gun Exhaust Rev Boxes for 2003-2004 LT-Z400 QUADSPORT Z, KFX400, 2004-2005 DVX 400 - 40-R02

Big Gun Exhaust Rev Boxes for 2003-2004 LT-Z400 QUADSPORT Z, KFX400, 2004-2005 DVX 400 - 40-R02

Big Gun Exhaust Rev Boxes for 2003-2004 LT-Z400 QUADSPORT Z, KFX400, 2004-2005 DVX 400 - 40-R02

REV BOX KFX/LTZ400, AC CAT 500

Part Number: BNE-40-R02

Not Yet Reviewed

Estimated Ship Date: Feb 25, 2026 if ordered today

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Estimated Ship Date: Feb 25, 2026 if ordered today

Big Gun Exhaust Rev Boxes for 2004-2005 TRX450R - 40-R11

Big Gun Exhaust Rev Boxes for 2004-2005 TRX450R - 40-R11

Big Gun Exhaust Rev Boxes for 2004-2005 TRX450R - 40-R11

Module, Rev Box, for use on Honda®, Each

Part Number: BNE-40-R11

Not Yet Reviewed

Estimated Ship Date: Feb 25, 2026 if ordered today

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Estimated Ship Date: Feb 25, 2026 if ordered today

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