The Park Tool I-Beam weighs just 91g and measures 75mm x 30mm x 17mm

These cassettes are for those with an XD Driver

no liner/chamois is included

Weight: It weighs on average 252gm

The waistband is wide so it won't dig in and silicone grippers on the legs will keep things in place

Avid BB5 Cable Disc Brake - Black - Caliper Only - Front or Rear - Black - Caliper Only netsuite-webdata-created The Park Tool I-Beam weighsThe BB5 features Avid's Tri Align Caliper Positioning System, tool free pad replacement, a melt forged body and an inboard pad adjustment knob. One try and youll wonder if the BB5s are really entry level brakes. Weight 335 grams (160mm rotor; front post mount) Caliper Design Mechanical, Monoblok Finish Satin Black Rotor G2 CleanSweep, 160 180 200mm (rotor only included with select options) Brake Lever: Not Included Pad Sintered Adjustment Inboard Knob