The foundation of a smooth gearbox
Shimming is one of the most important jobs in any airsoft gearbox, and this Rocket (SHS) mixed set gives you everything you need. Twenty-seven steel shims in three thicknesses let you set each gear precisely rather than making do with whatever came in the box.
What is in the set
You get nine shims each in 0.1mm, 0.15mm and 0.2mm. Stacking these thicknesses lets you build up exactly the right spacing for the spur, bevel and sector gears, so there is enough here for a full build with spares left over.
Why it matters
Proper shimming aligns the gears and controls their end float, the small amount of side-to-side movement. Get it right and the gearbox runs quieter, spins more freely and suffers far less wear on gears and bushings. Get it wrong and you get noise, drag and premature failure.
Made to last
The shims are steel for durability, so they will not deform under load like softer materials can. Pair them with fresh bearings or bushings from our airsoft accessories, or let our Kent repair and servicing team do the work.
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