RAYS Engineering, established in 1973, is the premier Japanese manufacturer of high end wheels for both motorsports and street use. By following their virtual goal of contributing to the promotion of motor sports culture, RAYS continues to manufacture wheels with innovative design and the highest technology. RAYS strives to stay ahead of the competition by forging strong trusting relationship with top race and tuning teams around the world and continually researching new materials and technologies to make the future racing wheels a reality today.

This special version of the TE37 is even lighter than the original TE37. According to Rays, on a 18x10.5 size, the weight of the TE37 SL has been reduced by 400grams when compared to the original TE37. They accomplished this by shaving down certain areas of the wheels, primarily near the back of the spokes and center. Through special mold form tooling technology, they were able to maintain the strength and rigidity. Please note, this version of the T37 does not have a compatible center cap.