please check the thread pitch

both day and night

xa0 Countershaft seal kit For a high quality renewing Contains: countershaft seal

Double and triple stitching for increased durability

clay and jump

JT SPROCKETS Steel Standard Rear Sprocket 1350 - 520 JTR1350.38 gas-gas-ec-300-e-racing-300-2017-esi5094406 please check the thread pitchWith the Leading Edge Edge Technology and Using Only the Highest Grade of Special Steel Alloys, JT Sprock's Produce A Full Range of Superior Quality Motorcycle Front and Reary Sprocks. Ultra Durable High Carbon C49 Steel Chain_pitch: 520. 0 Material: Steel rear_prolet_teeth_count: 38. 0 REAR_PROET_TYPE: 1350 REAR_PROET_SSION: Standard