Big Gun Exhaust Rev Box CDI Unit for 2003-06 Yamaha YZ450F - 40-R13 1985 Honda VF1100 Magna 25" louvered core gives that

25" louvered core gives that traditional Harley® sound

lean seats featuring detailed hand stitch work

Diameter (mm) : 305

2003 Honda CR85R

Part Number: PWRWK-T09-050

Big Gun Exhaust Rev Box CDI Unit for 2003-06 Yamaha YZ450F - 40-R13 1985 Honda VF1100 Magna 25" louvered core gives thatBig Gun Exhaust Rev Box CDI Unit Increases overall RPM limit Advanced timing curve Easy direct plug in replacement to stock CDI box 6 month Limited Warranty If you are looking to swap out your stock CDI box, the Big Gun 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. The Big Gun Rev Box is offered for various offroad MX and ATV models.