Losi LOSF0430 Nitrotane Race Fuel 30% Quart 1/16 Summit Parts Kyosho describes the purpose directly:

Kyosho describes the purpose directly: the weights attach to the front knuckle to increase tire load and change steering response

users can program a variety of features in the HSB-9XXX Series including: Fail Safe On/Off and Position

giving racers a clear upgrade path as they progress

Direct replacement for the factory stub axle carriers

and rough dirt where the smoother street and stadium tires give up

Losi LOSF0430 Nitrotane Race Fuel 30% Quart 1/16 Summit Parts Kyosho describes the purpose directly:Losi Nitrotane Race Fuel is a premium nitro fuel blend created in partnership with VP Racing Fuels for competitive off road and on road nitro applications. Formulated at a 30 percent nitro percentage, it delivers an advanced lubrication package that reduces wear and material degradation inside the engine, protecting critical components during high RPM racing and everyday bashing. Its low acid content helps extend the service life of glow plugs,