37T Main Gear & 13T Input GearMade of harder Steel, not easy to damage, which is stronger, more stable, wear-resistant, environmentally friendly and has a long service life.
Differential Case Set: The upgrades part is durable enough.Precision CNC machined,Anodized 6061-T6 aluminum for lightweight and durable performance.
Easy to Install:The Hops Up Upgrades Set can be directly installed, do need any modification. It is designed to allow more smooth rotation and strength! Providing unmatched driving versatility.
Rcarmumb Guarantee:If you are not 100% completely satisfied with our products, please feel free to contact us to request a refund or exchange! Your Satisfaction is Our Top Priority.
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