Middleburn's external BB crank - the X-Type. It uses a floating 24mm alloy BB axle with Middleburn's own spline on each end. It requires a standard external bearing BB like a KCNC Shimano Fit, Hope or Chris King - not supplied! The LHS arm has an adjuster to take up axle float and lightly load the bearings. This crank comes without a spider or rings.
175mm arms
Sweet Torque interface
spider options available on these crank arms - triple, Duo or Uno
Weight : RS8 175mm arms and axle 548g (no spider, rings or BB)
Does not include a spider, Bottom Bracket or chainrings
