System Tech Racing also makes a set that will work for the Alta:
These will work on the SM and the 4CS forks on the 2017 MX and 2018 EX/MX
http://www.systemtechracing.com/product_p/10-22.htm
Thanks for pointing these out, Scott. The STR bleeders look awesome, but...
The STR 10-22 model bleeders for 4CS forks do NOT work on the SM forks — unless you call grabbing only one thread working. They're too short. They were the first ones I tried, because I like how they're triple-sealed. I also tried bleeders from Motion Pro (two different models) and Works Connection — also too short.
The problem with the SM fork is that (a) its fork caps are thick, so you need a bleeder with a small-diameter barrel to fit through the deep hole in the fork cap, and (b) the female threads start even deeper down the bleed hole underneath the fork cap, so you need a bleeder with a longer threaded portion.
Looking closely at the STR website now, I wonder if the 10-21 model would fit the SM fork. It seems to have a longer threaded portion than the 10-22 model that you pointed out, and its multi-diameter barrel looks like it will clear the fork cap:
10-21
10-21 | 10-22
10-22 |
Looking at these photos side-by-side, I prolly should've tried the 10-21 model instead of the 10-22.
Scott, I see that you sell the 10-21 model (which you list as "Open Cartridge/Closed") in addition to the 10-22. Do you have an SM fork you can try them on? If not, would you consider selling me a set of the 10-21? If they work on my SM, I'll post a picture here. If they don't work, can I send them back without paying your 15% restocking fee?
Thanks!
[Update: STR changed its website and swapped out photos. I updated this post to use the photos that show threading.]
