Mndefender Posted October 23 Member ID: 1,166 Content Count: 13 Reputation: 10 Joined: 08/03/2021 Status: Offline Last Seen: October 23 Share Posted October 23 Installed a EPI Mudder clutch kit on my HD8 xt cab with 30” tires. Used the green spring as recommended in the instructions. I have to say I don’t notice much of an improvement. Acceleration not any faster, top speed the same but less power at upper speeds. There seems to be a little more torque on initial take off, but it’s so indiscernible I’m not even sure that’s really improved either. Anybody have any thoughts? Link to comment Share on other sites More sharing options...
honda400ex2003 Posted October 23 Member ID: 1,660 Content Count: 165 Reputation: 33 Joined: 07/08/2022 Status: Offline Last Seen: 17 hours ago Share Posted October 23 are the rpms higher at any given speed? say 40 mph, stock vs clutch kit. i had a clutch kit in mine and really had the same thing, even with my hd10. these are just big machines to try to move, its not going to make a huge difference. i took mine out, the increased rpms while cruising made the cab even louder for running on the roads. does it come with a helix as well? if the green spring is indexable on holes, it may need to be adjusted to a tighter hole for more engagement. not sure how that kit works, as i have an aftermarket assassins kit for mine. steve Link to comment Share on other sites More sharing options...
Andystoy19 Posted October 23 Member ID: 133 Content Count: 699 Reputation: 156 Joined: 04/24/2019 Status: Offline Last Seen: 19 hours ago Share Posted October 23 I have one on my HD10 XT Cab and it works fine, I would call EPI and see what they suggest.😉 1 Link to comment Share on other sites More sharing options...
Vader Posted October 25 Member ID: 142 Content Count: 37 Reputation: 15 Joined: 05/06/2019 Status: Offline Last Seen: Monday at 06:41 PM Share Posted October 25 What 30” tires are you running? Some are tremendously heavy. I added the same setup in the hd10 with 30” carnivores and mine will literally break ground from a dead stop to full throttle. Absolutely improved my performance. I would think the hd8 is just less hp and just not going to be that much of an improvement like you’re experiencing. May try a tuner. I run a power vision 3 made by dynojet. Link to comment Share on other sites More sharing options...
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