e*thirteen Helix R 107 BCD 4-Bolt Chainring - 42t 11/12-Speed 107BCD Black ModelNumber=10928 Post Mount

Post Mount

wide or x-wide range available

Center tread keeps you rolling efficiently

HG 8-11sp: Not compatible with HG 11sp road cassettes

e*thirteen Helix R 107 BCD 4-Bolt Chainring - 42t 11/12-Speed 107BCD Black ModelNumber=10928 Post Mounte*thirteen Helix R 107 BCD 4 Bolt Chainring 42t 11 12 Speed 107BCD Black. The e*thirteen Helix R 107BCD Chainring designed for 4 bolt 107BCD 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 theyre CNC sculpted for a high