Shimano xtr m9000 race spd clipless mtb pedalsshimano invented spd since then weight has decreased while mud clearance has increased thanks to shimanos expertise in bearings forging and pedaling dynamics the reliability of spd has always been the benchmark in the industry features ultimate power transfer matched with legendary dependability in an evolutionary racing pedal the result of 20 years of spd pedal design experiencethis xtr pedal is ideally suited for cross country racing due to