Surly Big Dummy/Big Easy Trailer Hitch Assembly Black CheckoutSpec= 12 x 142/148 mm Crown Race 30 Weight 160 Model-Ambix Platform+Clipless Pedal

Surly Big Dummy Big Easy Trailer Hitch Assembly Black CheckoutSpec= 12 x 142 148 mm Crown Race 30 Weight 160 Model Ambix Platform+Clipless Pedal Crown Race 30 Weight 160 Defined Color Black S Defined Color Black Rings 32 Spindle Interface Type SRAM DUB Chainring BCD Direct Mount SRAM Color Black Chainline Hub Compatibility 141 148 Boost Hubs Drivetrain Speeds 12 Drivetrain Speeds 11 Drivetrain Speeds 10 Number of Chainrings Chain Retaining Single Crank Intended Use Mountain BB Included No Pedal Spindle 9 16" Crank Length (mm) 175 The Dummy Hitch assembly replaces the wheel yoke of your Surly Bill or Ted Trailer and inserts into the horizontal tubes on the non drive side of your Surly Big Dummy or Big Easy thereby making it possible to haul your trailer using your cargo bike