This is a PRO-2 Rear Bumper for the Slash 2WD with Pro-Line Transmission. Pro-Line is proud to introduce an all-new Race-inspired Rear Bumper specifically designed around Pro-Line's Performance Transmission for the 2WD Slash. The Slash is the most successful Short Course Truck ever made and now you can add Pro-Line's Ultra Durable Rear bumper directly to your Truck with Pro-Line's Transmission. The PRO-2 Bumper features Pro-Line's unique “Flex Mount” brace that absorbs all impacts rather than transferring them into your Truck and potentially damaging vital components. The two vertically mounted screws that fasten the Bumper to the Brace act as pivot points for the Brace to rotate around allowing the PRO-2 Bumpers to bend but not break. The PRO-2 Bumper was specifically designed around Pro-Line's Performance Transmission, making it a must have for all who already enjoy the added benefits. If you love Racing and Bashing your Slash and you have Pro-Line's Performance Transmission, then you need Pro-Line's new PRO-2 Rear Bumper!