OK...the two-up machines couldn't lift the front end up stock....never. Plus...you have those HEAVY Mambas...so there is no way in hell ANY clutch kit will give you the ability to lift the front end. The best hope you have is a STM secondary and a QSC primary clutch. Then, maybe with traction and the right bump in the road, you MIGHT get the front end up.AFTER INSTALLING A DELTON MUD PRO CLUTCH KIT UNABLE TO LIFT THE FRONT END ANY MORE THIS IS A TWO UP MACHINE SAME FRAME AS THE XMR IS THERE ANY THING THAT I CAN DO SO THAT I AM ABLE TO DO THIS AGAIN