If you are experiencing loudness, slipping & straining, or overall poor performance of Your Gilmer Smart Motor, you need an upgrade! Move from 1950's technology to today's quiet, highly-efficient Poly-V Drive System!\n\n2 Great Options to Buy!\n1) Gilmer Upgrade Without Motor (556490) Includes:\n- High-Speed, Two-Bearing Quill\n- Drive Sleeve Assembly\n- Poly-V Sheave\n- (1) Poly-V Drive Belt\n- Easy-to-follow Instructions\n\n2) Gilmer Upgrade With Motor (556492) Includes:\n- High-Speed, Two-Bearing Quill\n- Drive Sleeve Assembly\n- Poly-V Sheave\n- (1) Poly-V Drive Belt\n- Easy-to-follow Instructions\n\nFeatures:\n- Poly-V Belt is a full 7/8� wide with 9-ribs to grip the pulleys for full power transmission\n- Poly-V Sheave has matching Poly-V pulley grooves machined into it and is high-speed balanced for smooth running performance\n- Drive Sleeve Assembly has a precision machined Poly-V Pulley with two high speed bearings and extra grooves in the pulley for proper belt alignment on these old machines\n- Nylon Drive and Ring comes pre-assembled and aligned to the Drive Sleeve Assembly\n- Double Bearing Quill Assembly is precision machined and factory-aligned with two high speed bearings for