For Tamiya TT02 Diff Lock. This hop up replaces the parts in the diff to lock it for drifting.
eBay
1Set RC Car Front Direct Coupling Diff 39T for Tamiya 1/10 RC Car TT02 /XV02/XM01 22047
Aliexpress UK
pair of tamiya tt02 diff locks printed in abs direct fit
eBay
Tamiya TT02 Full Set Metal Upgrade Parts Kit Drive Shaft CVD Steering Cup Diff Cup Steering Assembly for Tamiya TT02 1/10 RC Car
Aliexpress UK
Tamiya TT01 Diff Lock For Drifting Or Racing. Rear differential will aid with drifting. Buy it now is 1 lock only. Where as if fitted front differential this can sharpen up the steering for racing. Can be easily fitted to the front or rear differential.
eBay
Tamiya TT02 Full Set Metal Upgrade Parts Kit Drive Shaft CVD Steering Cup Diff Cup Steering Assembly for Tamiya TT02 1/10 RC Car
Aliexpress UK
Use it in place of the differential bevel gear. This is an optional part that "locks" the standard TT-02 differential gear. Although it disables the differential, it transmits impacts such as collisions directly, so frequent maintenance is required.
eBay
Tamiya TT02 Full Set Metal Upgrade Parts Kit Steering Cup Diff Cup Swing Arm CVD Drive Shaft Steering Assembly for 1/10 RC Car
Aliexpress UK
Tamiya 54649 TT02 Differential Locking Block. Lock your final gear the proper way.
eBay
Metal Gearbox Joint Cup Differential Cup Diff Cup for Tamiya TT01 TT02 TT01D TT01E DF-02 M05 M06 1/10 RC Car Upgrade Parts
Aliexpress UK
Tamiya TT-02. Custom 3D printed inserts for differential to lock the wheels. Part consists of one 3D printed part(gearcase and driveshafts not included)! With this upgrade you can drive through loose sand and mud without one of you wheels to spin freely.
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Steel Gearbox Joint Cup Differential Cup Diff Cup for Tamiya TT01 TT02 DT03 DF02 TT02B 1/10 RC Car Upgrade Parts
Aliexpress UK
Model：For 1/10 Tamiya TT-01 RC. 1 set of differential cup kit. Not easy to rust, not easy to break. Color: as picture.
eBay
AXSPEED 1Set Steel Front / Rear Diff Drive Cup for Tamiya TT01 TT02 BT01 1/10 RC Drift Car Upgrade Parts
Aliexpress UK
Model：For 1/10 Tamiya TT-01 RC. A set of differential cup kit. Not easy to rust, not easy to break. Material: aluminum alloy. Color: as picture.
eBay
AXSPEED Aluminium Alloy Centra Drive Shaft and Diff Propeller Joint Set for Tamiya TT02 1/10 RC Drift Car Upgrade Parts
Aliexpress UK