Ohlins BM 851 Shock Absorber (Street/Roadracing Bm 851 K1200Lt Rr) All Ohlins shock absorbers are developed from the knowledge and experience of top factory race teams around the world Superior construction, superior materials and superior engineering skills give you the best-quality shock on the market Shock body is precision-drawn steel with aluminum shock reservoir; race shocks feature lightweight, high-strength aluminum shock bodies Stainless steel braided PTFE hose used with all remote reservoir shocks Springs are chrome silicone