We are pleased to offer the SHO Source Underdrive pulleys for the MTX and ATX for another group buy. This will be just for a solid crank pulley for the MTX or ATX. This will be much cheaper then the other kits as you would have 3 or 4 pulleys to install as well. We don't have plans to make the SHOShop UDP made for quite a while if we even make them as we would have to make 4 kits at with 3 pulleys for each and then 30 of each pulley. This means a lot of pulleys and a not a good chance of getting enough orders. As part of the Group Buy for the MTX you will get your pulley done in your own color and $20 off the regular price. The colors are shown in the ad. Once we get the first 10 orders we will have them made. The group buy will run for 2 weeks. For the ATX we will offer it at regular price with a color option. If we get 10 orders or more we will drop the price and refund. The crank pulley is where you will see the biggest gains when it comes to UDP. The pulleys are solid aluminum. More information can be found here: MTX UDP ATX UDP Price is $110 for the group buy. MTX UDP 1. Creed- Black (paid) 2. sho2see- Green (paid) 3. 4. 5. 6. ATX UDP 1.