this is the best out of the box slot car system you can buy

Traxxas 7767X Spring Retainer (Adjuster) PTFE Coated Aluminum GTX Shocks X-Maxx

The detailed beadlock-style design gives compatible crawler builds a rugged custom appearance

Genuine HPI Racing part 101203

Continuous discharge rating: 50C

BSR Racing 1/8 Mounted GT Foam Tires GOLD w 17mm Hex (2) Yellow Wheels Cen Racing Parts this is the best outBSR Racing 1 8 Mounted GT Foam Tires GOLD w 17mm Hex (2) Yellow Wheels This compound is a little softer than our Orange compound with superb grip and and excellent wear. In testing it has already proven to be a winner. 20 23 Durometer. Yellow Wheel