• This is the LIGHTEST crank pulley combination available.
• The two-piece inter-locking design allows you to changed drive pulley diameter quicker at the track.
• The crank adapter fits all the pulleys so it reduces cost of replacing damaged pulleys.
• These pulleys are stackable and will adapt to pin drive Gilmer and HTD pulleys.
Available in 1:1, 15% or 30% Reduction