... coefficient: ± 0.4010. The material of aluminum is ADC12.General Motorcycle Maintenance Tips --Things to Check RegularlyTip: There are dozens of ... : Battery, Oil, Tires (tyres), Brakes, Chain and sprocket (Shaft Drive, Belt Drive) and Fuel (Gas, Petrol).----------------------------------------------------------------------------------GS125 Motorcycle Brake Shoe ----- GS125-01Class ...