Description Reviews (0) Description This helix has a multi angle progressive 41.8-42 (.6)-48 (1.02)-76 (1.33) BA 90 View AllClose Overall rating (No reviews yet) Write a Review Write a Review Gilomen Innovations SECONDARY CLUTCH UPGRADE HELIX P90X-HD 41.8-42 (.6)-48 (1.02)-76 (1.33) BA 90 Rating Required Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email Required Review Subject Required Comments Required 0 Reviews View AllClose