Circle D 6L90 transmission performance parts and rebuild kits are some of our most popular products. Our customers know that when they want to make 6L90 transmission upgrades, Circle D is their go-to source. We have a passion for what we do and we don’t sell any parts that we wouldn’t put in our own cars. This dedication to quality is why so many Houston-area car enthusiasts use Circle D for their transmission rebuilds.
Since 1976, Circle D has been a leader in the transmission industry. Our team is well known for its expertise in GM and Ford rear-wheel drive high performance transmissions. By keeping up with the latest technology, research, and development, we stay at the forefront of the field and exceed our customers’ expectations.
The story of our 6L90 transmission rebuild kits and performance parts began with our purchase of a Gen 5 Camaro. Our goal was to transform the factory transmission so it would be able to handle today’s horsepower, but after documenting our research and development, we began to receive requests from other horsepower junkies asking to purchase our revolutionary performance kits for the 6L90.
These days, our performance parts retail service makes the same high quality 6L90 transmission parts that we use for our local customers available for professional installation worldwide. As a small, family-owned business, we’re thrilled to see our 6L90 transmission rebuild kits and parts being used by customers around the globe.
6L90 transmission upgrades are easiest with one of our four 6L90 performance transmission rebuild kits. Circle D Level 2 6L90 performance transmission rebuild kits are rated up to 600 RWHP, Level 3 6L90 performance transmission rebuild kits are rated up to 750 RWHP, and Level 4 6L90 performance transmission rebuild kits are rated up to 1100 RWHP. Each kit comes with detailed instructions from our transmission experts and free UPS domestic ground shipping.
Other options for 6L90 upgrades include billet reinforced output carriers, performance transmission clutch kits, performance transmission billet shafts and hubs, bearing kits, pressure switch installation tool kits, and 2014 and up Sure-Cool systems.