Sram apex 1 road crankset gxpsrams apex 1 gxp road crankset makes road bike 1x drivetrains available to everyone as its the most affordable model sram has ever released suitable for road or off road use the apex 1 is equipped with an x sync specific 1x chainring and a four arm crank spider this means youll have ultimate chain engagement no matter how hard you sprint or how rough the terrain gets specifications arm material aluminium chainring material aluminium chainring tooth coun