The shimano xtr m9020 trail hydraulic disc brake lever is a i spec ii compatible disc brake lever this ergonomic powerful and compact servo wave xtr hydraulic disc brake lever is performance optimized with full adjustability on the fly with a short stroke servo wave mechanism with sil tec coated roller for a quick smooth pad engagement and more power for aggressive riding it has excellent clearance at the calliper which has enabled shimano to use the short stroke servo wave mechanism as the