Race Spec (RS) Rear Sprockets feature our revolutionary Angled Mud Groove. This exclusive design creates a self-cleaning effect during operation, shedding away mud that would otherwise lead to horsepower loss and sprocket wear. With their precise CNC machining and unique layout, these grooves also allow an increase in tooth surface area of up to 40% over competing sprockets. As a result, contact with the chain is significantly improved, leading to a marked increase in sprocket life over other brands. That's the ProTaper difference.
Things that could pair well together with what you are looking at...
Excellent Upgrade — Completely Modernized My BMW
I’m extremely happy with these taillights
Excellent Upgrade — Completely Modernized My BMW
I’m extremely happy with these taillights. I installed them on my 2009 BMW 335xi E90, and they completely updated the appearance of the car without making it look overly modified.
The clear-smoke design looks especially good against my Space Gray paint, and the LEDs are bright, crisp, and give the rear of the car a much more modern appearance. Fitment was very good and the finished installation looks clean and close to OEM quality.
I wanted something that would modernize my older BMW while still keeping it classy, and these accomplished exactly that. They made a much bigger difference to the overall appearance than I expected.
Very pleased with the quality, fit and appearance. I would definitely recommend them to other E90 owners looking for a tasteful lighting upgrade.
BMW 3 Series E90 Upgraded LED Tail Light Assembly (2009-2012)