MR Grease Kids These cassettes are optimized for

These cassettes are optimized for off-road and feature PowerGlide II shift technology for smooth and positive shift performance with minimal additional weight

Shimano's Ultegra bottom bracket uses Pro Tour-proven technology for lighter weight and super smooth spinning

use it either towards the headtube or your seatpost depending on your preference and comfort

machined brake surface Spokes: 14G Stainless steel Hubs: Alloy hub with bolt-on axle Weight: 32 lbs

Cassette Cogs:11-13-15-17-19-21-24-27-31-35-40

MR Grease Kids These cassettes are optimized for(MR) Micro Resistance Polymer Technology is the ultimate in protection & performance for cup and cone bearings, head set bearings, suspension forks & shocks. With several compound used in aerospace, the new and improvedPRO Xformula is lighter viscosity while maintaining higher protection then other greases. PRO X MR Grease has less than 3% VOCs. PRO X MR Greaseuses polymerization to create a barrier of grease at the contact points which reduces wear,