Close Ratio''S

1 products

Our Close Ratios for Harley-Davidson range gathers the tightened gear ratio sets designed for late 1976 to 1986 four-speed Big Twin transmissions, a favourite platform for Shovelhead and early Evolution customs. Supplied by Andrews, a trusted specialist in Harley-Davidson transmission upgrades, these ratio sets help keep your engine in its strongest power band during spirited riding and touring alike. Iron Stable is operated by Iron City Motorcycles, the authorised Harley-Davidson dealer in Leeds, giving every transmission part we list the backing of a full workshop and parts team. Close ratio gearsets are a proven upgrade for FX, FL and custom four-speed Harley-Davidson builds, offering smoother shifts and better throttle response. Whether you are restoring a classic or chasing performance gains, Andrews ratios deliver the results experienced builders rely on. Browse the full range below.