All the Derbi YSS shock absorbers we distribute are of brilliant quality and something we use in our own workshop every day. All YSS shock absorbers for the Derbi are rebuildable and as the sole YSS Research and Development Centre in the UK we can offer full service facilities and no hassle warranty repairs. We pride ourselves on making customer satisfaction a priority so why go anywhere else? A superb quality and affordable Derbi YSS ME302, MZ362, MZ366, MG506, MZ506 or MX506 shock absorber is an absolute must for any motorcycle enthusiast looking to upgrade from the stock shock absorbers which are built to an appallingly lower budget than required. Installing one of these is highly beneficial and extremely simple. We even do Twin shock units which are available in RD222, RE302, RG362 and RZ362 specification.