E*thirteen Helix R Guidering (52/55 Flip Flop) 32t - Bronze CheckoutSpec= Thru-Axle Dual Sided Shimano Group The rear rim is firmer

The rear rim is firmer to maximize power transmission and impact toughness

7-Series alloy with micro-grain refinement during the drawing and extrusion process for a strong and light weight bar

Your ultimate companion for road cycling and commuting is here

}Zipp Vuka Aerobar Extensions - Evo 110 Carbon Low

}SRAM HRD/HRR Hydraulic Brake Master Piston Assembly Kit with Piston Plate and Bleed Screw - Right/Rear Lever

E*thirteen Helix R Guidering (52/55 Flip Flop) 32t - Bronze CheckoutSpec= Thru-Axle Dual Sided Shimano Group The rear rim is firmerE*thirteen QuickConnect Direct Mount rings include 1mm spacers, which allows them to be run on legacy cranks (TRS LG1 XCX), as well as Helix and Helix R cranks 3 bolt direct mount chainrings fit SRAM and other similar interface cranks Tooth profile is compatible with both Shimano and SRAM chains in both 11 and 12 speed Can be flipped to provide either a 52 or 55mm chainline Model Helix R Ring Type Single (Anti Chain Drop) Mount QuickConnect