e*thirteen Helix R 107 BCD 4-Bolt Chainring - 42t 11/12-Speed 107BCD Black CheckoutTitle=Benno Boost Replacement Fork - 2020-2021 Pair with SW-EM800 and EW-SW310

Pair with SW-EM800 and EW-SW310 for a simple Road Di2 cockpit

Designed to be compatible with 43-51mm chainlines covering all modern gravel and road 1x systems Model ARg Range 38-54t Mount Braze-on Color Black Weight 24g

S IS 42/52 45x45 Stack - Color Silver/Black Weight -

SHIMANO Equivalent RD-A070

Flat-Mount disc brakes

e*thirteen Helix R 107 BCD 4-Bolt Chainring - 42t 11/12-Speed 107BCD Black CheckoutTitle=Benno Boost Replacement Fork - 2020-2021 Pair with SW-EM800 and EW-SW310The e*thirteen Helix Race 107 BCD Chainring designed for 4 bolt 107 BCD cranks like SRAM Red or Force including power meter equipped cranks offers a performance upgrade for Gravel and Road cyclists. The 38 40 and 42 tooth rings pair perfectly with e*thirteens cassettes for more overall range and higher top speeds. Made from durable premium 7075 alloy they're CNC sculpted for a high stiffness to weight ratio. Compatible with both SRAM and Shimano 11