Weir Racing is committed to providing only the highest quality parts at affordable prices.
If it isn’t good enough for our cars, it isn’t good enough for yours. We offer only parts that have met our standards for aesthetics, performance, durability, streetability, and overall quality. They are rigorously tested on the street, on the dyno, and at the race track before they are offered for sale to our customers. Whether you are looking to maintain the warranty on your grocery getter or trying to break world records, Weir Racing has your best interests in mind. We manufacture and distribute aftermarket parts for 1999 to 2016 Mustangs and Shelby GT500’s.
Don’t see something you’re looking for? If it is a brand we carry, we can get it! This includes parts for Corvettes, GTR’s, etc. There are many items we carry that are not listed on the website.
Weir Racing specializes in the 2011+ Coyote and GT500 with a heavy emphasis on the 2013/2014 TVS supercharged GT500. We hold TVS records for:
145.58mph – 1/4 mile trap speed (stock 5.8L longblock / ported TVS)
182.3mph – 1/2 mile trap speed (built 5.8L longblock / ported TVS)
197.2mph – standing mile trap speed (stock 5.8L longblock / stock TVS + nitrous)
218.6mph – standing mile trap speed (built 5.8L longblock / ported factory TVS) – **COLORADO MILE MUSTANG RECORD** at 5,500 ft elevation
221.5mph – standing mile trap speed (built 5.8L longblock / ported factory TVS)
1,015.2rwhp / 1,023.6rwtq – Mustang dyno sheet – built 5.8L / ported TVS / NO NITROUS
207.7mph – WORLD’S FASTEST STANDING 1/2 MILE MUSTANG!!! 5.8L twin turbo 2015 Mustang
219.5mph – standing mile trap speed (world’s fastest 2015+ Mustang)