This is the optional Robinson Racing 45T Spur Gear

and the blue finish coordinates with other blue Traxxas option parts

Replacement o-rings are available (TKR8725)

Direct replacement for the factory rear wing

Fluorescence yellow color

NSR McLaren 720S GT3 Marlboro Yellow 1/32 Slot Car 0633AW Anglewinder EXO Parts This is the optional RobinsonNSR McLaren 720S GT3 Marlboro Yellow Anglewinder Setup 1 32 Scale Analog Slot Car. Specs: High tech NSR components Ready to race and competitive straight out the box Special aluminum rims with AIR SYSTEM technology Soft compound tires, give an exceptional grip on any kind of track surface Adjustable front axle ride height Motor 21,400 RPM Heat treated axles Machined bronze self lubricating bushings Ultra smooth and quiet all metal gearing Adjustable