Dealer Sales, Retail Sales, Engine Builds, Repairs, Dyno Service, and Custom Installations
Address
169 Rabon Road, Columbia, SC 29223
Phone Orders / Tech Questions
Monday - Thursday 10am-3pm EST
Friday CLOSED
Saturday/Sunday Closed

Welcome to Rob Bush Motorsports THE RACERS CONNECTION
RBM strives to offer the lowest prices we possible can. We offer FREE SHIPPING on Orders over $100 to the Continental US (EXCLUDING Body Work and Swingarms). We strive to have the best customer service in the industry and are ready to serve your performance motorcycle needs.
Unleash your GSX-R1000’s power with this 4-1 Competition Series drag racing exhaust. Built from lightweight 304 stainless steel with a clean brushed finish, this system is made for serious racers running modified or nitrous setups.
It features tapered head pipes (1.625”–1.750”) with full merge collectors for max flow and performance, plus a tuned megaphone for that perfect exhaust tone. Designed for drag racing, it offers better ground and tire clearance (works with 16” or 17” wheels) and quick access for clutch maintenance.
Over 30 lbs lighter than stock, this setup gives you the edge you need on the strip.
Fits 2007–2025 GSX-R1000 models.
Key Features:

Dealer Sales, Retail Sales, Engine Builds, Repairs, Dyno Service, and Custom Installations
Phone Orders / Tech Questions
Monday - Thursday 10am-3pm EST
Friday CLOSED
Saturday/Sunday Closed