I got the flywheel from Suzuki Racing Development (
www.suzukird.com ) but I should have just got it made localy as I waited about 3 months before it shipped and after duty cost about $550CAD and the Underdrive pully is made by Off Center Customs (
Off Center Custom Racing - The Suzuki Performance Specialists ! ) who specializes in Suzukis localy from Champion Alberta and cost about $85CAD and you have to use a 1" shorter belt as its 25% underdriven. I'm guessing both the under drive and fly wheel are less than half the OEM weight. The pressure plate and disc is made by Centerforce and the disc is their Dual Friction model and does include the centrifical weights and cost about $380CAD.