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SilentSync Goodyear Eagle NRG Purple Timing Pulley

The SilentSync Belts Color Spectrum System uses a color-coded part numbering scheme for belts and sprockets, making it easy to select proper drive combinations. Simply match the colors to ensure you’ve paired the correct belt and sprocket.
MPB (Minimum Plain Bore) refers to a straightforward, untapered bore that is drilled through the center of a sprocket.
QD Bushings and H Bushings for sprockets provide the versatility to use the same sprocket on varying shaft diameters. To ensure the best fit, you can purchase tapered bushings (sold separately) that correspond to your specific bore sizes.
Available in both Inch and Metric, H or QT Bushings are designed for easy installation and removal. Their split flange design and taper work together to securely clamp onto the shaft, achieving a fit equivalent to a shrink fit. These bushings feature a gradual taper of 3/4 inch per foot of diameter.