Thanks for the questions!
1\. We include two different shaped end caps with the TRAIL units so they fit rounded stays, one has a 15mm diameter to work with tubular stays like chromag hardtails etc. and the other has a 35mm effective diameter to work with slightly rounded stays. We have the end cap sets available separately too so anyone who purchased before they were included can get them for the price of shipping.
2\. We have instructions online [https://stfubike.com/stfu/installation](https://stfubike.com/stfu/installation) but its essentially as easy as shifting into hardest gear, measuring to the underside of your chain at installation point and cutting at the measurement point provided on the chain dampers. Clearance has been factored in but its definitely a measure twice, cut once deal.
3\. Thats correct, once cut its difficult to make the damper units longer although it is possible to join the cut piece back on with a couple of cable ties.
4/5. We found that most cable ties tend to stretch a little after the first few rides, especially in the sun and even the UV stabilized ones but cheap ones stretch even more. For this reason its important to leave a little length on the cable ties so you can tension them up after the first couple of rides. After that they are good to go. We are testing some plastic coated stainless steel cable ties that shouldn't need to be tensioned again, its just a real challenge trying to fit cable ties on the packaging without blowing out the size, which is why we currently don't provide them.
Jan. 26, 2021, 11:51 a.m. - STFU Bike
Thanks for the questions! 1\. We include two different shaped end caps with the TRAIL units so they fit rounded stays, one has a 15mm diameter to work with tubular stays like chromag hardtails etc. and the other has a 35mm effective diameter to work with slightly rounded stays. We have the end cap sets available separately too so anyone who purchased before they were included can get them for the price of shipping. 2\. We have instructions online [https://stfubike.com/stfu/installation](https://stfubike.com/stfu/installation) but its essentially as easy as shifting into hardest gear, measuring to the underside of your chain at installation point and cutting at the measurement point provided on the chain dampers. Clearance has been factored in but its definitely a measure twice, cut once deal. 3\. Thats correct, once cut its difficult to make the damper units longer although it is possible to join the cut piece back on with a couple of cable ties. 4/5. We found that most cable ties tend to stretch a little after the first few rides, especially in the sun and even the UV stabilized ones but cheap ones stretch even more. For this reason its important to leave a little length on the cable ties so you can tension them up after the first couple of rides. After that they are good to go. We are testing some plastic coated stainless steel cable ties that shouldn't need to be tensioned again, its just a real challenge trying to fit cable ties on the packaging without blowing out the size, which is why we currently don't provide them.