![Traxxas 7550R Driveshaft Assembly Front & Rear 6061-T6 Aluminum TRA7550R](http://roco4x4.com/cdn/shop/files/a5c8abc0-5bc4-447f-a8ce-fa83f9e64a8a.380b0367a22341bdf7f8408b6dd5790e_487e80a5-97bd-429d-b64d-76203fa5df4f_875x700.jpg?v=1715334702)
![Traxxas 7550R Driveshaft Assembly Front & Rear 6061-T6 Aluminum TRA7550R](http://roco4x4.com/cdn/shop/files/a5c8abc0-5bc4-447f-a8ce-fa83f9e64a8a.380b0367a22341bdf7f8408b6dd5790e_487e80a5-97bd-429d-b64d-76203fa5df4f_875x700.jpg?v=1715334702)
Description
Traxxas was started in 1986 with an idea for what was at that time an entirely new concept for a fully assembled, hobby-class R/C car. This new car would have all the same benefits of a hobby-class kit such as replaceable parts, hop-ups, and a high-quality component radio system, however it would be fully assembled with a colorful body, right out of the box. Traxxas coined the term "Ready-To-Run" (RTR) to describe this new class. Since a fully assembled, ready-to-run car would appeal to the entry-level beginner, a toll-free customer support line was set up from day one to service an entirely new category of hobby consumer. At first, acceptance of the RTR concept was slow because traditional R/C kits had always been unassembled. Once people realized that a Traxxas RTR had the same performance and quality as the traditional R/C kits, only that they didn't have to build it, the ready-to-run car was a runaway hit! A kit version would still be offered for those who still wanted to have the building experience.