Serpent have first aluminium and brass option parts for the Spyder SRX2 rear motor buggy available. First up are two front bulkhead, one from lightweight aluminium, the other made from heavier brass. Both include 20°, 25° and 30° composite inserts to change the overall castor angle of the front wheels in order to fine-tune the steering characteristics while the different weights of the bulkheads allow to alter the overall weight distribution. Also new is the RR FR brass suspension bracket, a replacement for the standard aluminium part. The mount works with the standard suspension inserts while adding weight when needed. Last but not least comes the 23g bulkhead weight that adds another tuning option when running on low-bite or bumpy surfaces. All parts are available now.