This 100BS25 sprocket features a 2-7/16" finished bore with a key-way and two set screws
Sprocket Size: 100R72
100B28H sprockets with a stock bore comes with the standard 1-1/4" inside diameter hole with no keyway or set screws and can be easily machine bored to custom sizes
What sets this 6208 bearing apart from others is the ABEC 3 precision standard that this bearing is made to
This 40BS34 sprocket features a 1-7/16" finished bore including a key-way and two setscrews
4TB42 Sheave four-groove 4.55" OD filter_H40BS47 This 100BS25 sprocket features aThis 4TB42 Pulley uses a P1 Series Bushing, is directly interchangeable with other manufacturers, is 4. 55" in diameter, and is manufactured in accordance with ARPM Standard for safe operation. With B series TB pulleys you can use A, 4L, B, 5L, AX, BX, AA, and BB belts. What separates this four groove 4TB42 pulley from the others is that it is made using a high grade 35 cast iron, is phosphate coated, painted, and balanced at the factory. Using the