Engineering: ±0.01mm tolerance cutting ensures mesh with original components. Compatible with Wltoys 12428/12423 differential, transmission, and drive systems.
Complete Upgrade Solution: Package includes 16 critical components: main drive gears, pinion gears, differential gears, and sealed bearings (362.5mm).
Complete Upgrade Solution: Package includes 16 critical components: main drive gears, pinion gears, differential gears, and sealed bearings (362.5mm).
Professional Grade Material: Manufactured with CNC-machined 12CrNi3 alloy steel, these gears undergo vacuum heat treatment (55±2HRC) for 30% higher durability than standard gears.
Easy Installation: Includes detailed installation diagram (compatible with exploded view in original manual). All parts pre-lubricated with high-temp grease.
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