Surly Big Dummy Deck - Black ModelNumber=E4691 They feature the same chain

They feature the same chain management technology for SRAM 1x drivetrains designed for Bosch motors

In order to create the fastest TT helmet out there

The Ultralight stem cap is designed specifically for carbon steerers that require that the steer tube extend above the stem

Flange Diameter Left 57 Rear Axle 12mm Thru x 148mm Tooth Count 108 Flange Diameter Right 59 Cassette Body Type Shimano Micro Spline Center to Flange Left 35 Center to Flange Right 22

15" Casing RaceGuard TPI 67 Compound Addix Bead Non-folding Type Non-tubeless Color Black Weight 575g E-bike E50

Surly Big Dummy Deck - Black ModelNumber=E4691 They feature the same chainSurly Big Dummy Deck Black. Replacement parts for the Surly cargo deck and rack system. TECH SPECS keyword search Big Dummy