There the ones . I run 40 shore ones on myn but other x6 owners at the club run 37 shore .
http://www.rc-direct.co.uk/-c-39_198_205.html I used to get these but some body said rc direct mite not have them again . If you can get them you need 2 donuts for a set . Measure and cut for the rears first then whats left for the front . I did it wrong the first time school boy error
With the schumacher ones
http://www.racing-cars.com/sp/catego...ar_Donuts.html
They are sold as pairs I got myn from kamtec . They are spot on for the rears no cutting and you will only have to cut for the fronts .
Where abouts are you racing ?