Wheels Manufacturing SOLO-SPLINE Micro Spline Single Speed Conversion Kit - 18t For Shimano Micro Spline Hub Bodies Orange Model-2-Tugs Axle Tensioner }Surly Midnight Special Frameset -

}Surly Midnight Special Frameset - 650b Steel Black 56cm

30mm of user adjustable travel range adjustment in 1mm increments

}Profile Design Ergo+ Armrest Kit

bearing# 71903 ID x OD x W (mm) 17x30x7

Wheels Manufacturing SOLO-SPLINE Micro Spline Single Speed Conversion Kit - 18t For Shimano Micro Spline Hub Bodies Orange Model-2-Tugs Axle Tensioner }Surly Midnight Special Frameset -Designed to seamlessly transform your Shimano Micro Spline hubs into a powerful Singlespeed setup SOLO SPLINE features a clever design that utilizes a base sleeve, which easily slides onto the Micro Spline freehub body, mimicking the process of installing a cassette. Once the base sleeve is in place, you can effortlessly slide the spacers and cog over it, securing everything with a reliable lock ring 7075 aluminum carrier and cogs for durability