Use this set of Traxxas pre-load spacers to adjust the ride of your Traxxas Ultra Shocks. Adding these to your Ultra Shocks can raise the ride height of your vehicle and pre-load your springs. It includes two 1mm spacers, two 2mm spacers, two 4mm spacers, and two 8mm spacers. Use Traxxas stock and hop-up replacement parts to get the most out of your Traxxas RTR vehicles. This product is made from high quality materials and designed for long-lasting performance. This is replacement hardware for use on Traxxas vehicles; consult your user's manual for exact parts listings. Set of pre-load spacers for Traxxas Ultra shocks Adjusts vehicle ride height Includes 1mm (2), 2mm (2), 4mm (2), 8mm (2) Fits all Traxxas Ultra Shocks UPC 020334376909 ASIN B0006MZL3S Brand Traxxas Model 3769 Set Name Traxxas 3769 Spring Preload Spacers Unit Count 1 Count Item Weight 9.07 g Part Number 3769 Manufacturer Traxxas Number of Packs 1 Included Components As described Warranty Description No Warranty Global Trade Identification Number 00020334376909