Cassettes

Shimano, Ultegra CS-R8100, Cassette, Speed: 12, 11-30T

Shimano, CS-HG31, 8sp. cassette, 11-34T, 11-13-15-17-20-23-26-34

SRAM, PG-1130, 11sp. cassette, 11-42T

SRAM, XG-1250, Cassette, Silver, Speed: 12, 10-36T

Shimano, Deore XT CS-M771-10, 10sp. cassette, 11-36T, 11-13-15-17-19-21-24-28-32-36

SRAM, XG-1250, Cassette, Silver, Speed: 12, 10-30T

SRAM, PG 1130, 11 speed cassette, 11-36

Shimano 105 5700 10-Speed 11-28t Cassette

Campagnolo, Chorus, 11sp. Cassette, 12-25T

Shimano, CS-M6100-12, Cassette, Speed: 12, 10-51T

Shimano, CS-M5100-11, Cassette, Speed: 11, 11-42T

EKAR 13 SPEED SPROCKETS
The 1x system works best for gravel, with the 13-speed configuration enabling that to work across a full range of gearing ratios – and what underpins that is the use of a 9-tooth sprocket.