The ergonomic XTR M987 bled I-spec-B Compatible Brake Lever/Post Mount Caliper has been stripped down to be light on weight and heavy on performance. The one piece Magnesium lever body with a hinged clamp for quick installation is lightweight, strong and durable but also rigid under braking loads. The short 13mm wide carbon fibre lever has a textured finish for a better feel, is lightweight, strong and reliable. The easy access lever is reach adjustable for custom lever feel and position, while the pivot position for efficient and powerful braking follows a natural pulling arc. The caliper uses cutting edge braking technology is lightweight, powerful and easily adaptable post-style hydraulic disc brake caliper. The caliper is made from super lightweight magnesium caliper design with Titanium hardware with oversized 22mm ceramic pistons optimized for heat insulation, lightweight and stiffness. The opposed 2-piston design reduces leading effect and optimal pad wear increases braking control. You can use Ice Tech pads with the XTR Brake Caliper which are available in resin or sintered compound, the optional aluminium radiation fin pad further improves heat dissipation reducing brake surface temperature by 50 deg C. Shimano recommend you use Ice Tech Centre-Lock rotors for optimum braking performance in a choice of 160 mm, 180 mm and 203 mm.