Check the listing for details. Wheels Manufacturing SOLO-SPLINE Mico Spline Single Speed Conversion Kit - 18t,. Condition: New. Listed at 116.95 USD. The Wheels Manufacturing SOLO-SPLINE is designed specifically for Shimano Micro Spline compatible hubs, this innovative kit is your gateway to a streamlined, high-performance single-speed system. The SOLO-SPLINE features a unique design that incorporates a base sleeve and lockring which smoothly fits onto the Shimano Micro Spline compatible freehub body. This mirrors the hassle-free installation of a standard cassette, allowing for quick setup changes. Slide on the spacers and cog, and secure them with a dependable lock ring. Experience the perfect ride, tailored to your preferences and riding style.Utilizes a durable 7075 aluminum carrier and cogs, with lightweight 6061 aluminum spacersIncludes adjustable spacers to fine-tune your chainline for optimal performanceDesigned specifically for Shimano Micro Spline compatible hub bodiesFeatures a cog designed with a narrow-wide tooth pattern to ensure superior chain holdAt only 101g, the kit is lighter than many other options on the market, reducing rotational mass for faster acceleration and easier climbingIncluded in kit: (1) 6061 Aluminum Lock Ring, (1) 7075 Aluminum Carrier Ring, (1) 6061 Aluminum End Spacer, (1) 6061 Aluminum 5mm Spacer, (2) 6061 Aluminum 2mm Spacers, (1) 6061 Aluminum 1mm Spacers, (1) 7075 Aluminum 18t Cog