The Axial XR10 is an extremely capable competition crawler, however the gears in the transmission are a bit heavy. RC4WD has released a lightweight, steel replacement set that hardened and a direct fit in the XR10 transmission.
Features:
• Full Complete gear set to upgrade 1 axle
• Hardened steel gears for superior durability
• Lightweight design
• CNC Machined
• Little extra weight for lower COG
• Stock Axial gears= 68.4 Grams
• Hardened Lightweight RC4WD= 62 Grams
Product Number:Z-S0293
MSRP: $39.99
[source: http://store.rc4wd.com/]