Fox RP2 Mountain Bike Shock Setting Instructions
So, let’s say you are getting ready to come out to our weekly off road ride. You are nervous because, well, it typically makes us nervous to show up and workout with random people.
This is the one time you want your bike to be in its best shape. You are going over it meticulously: airing the tires, cleaning the frame and adjusting the shocks.
Which leads you to this internet search. You’ve got these dang RP2 shocks. They’ve held up well for you, but you can’t remember how much air is supposed to be in them.
I recently had someone ask me this exact question, and decided to throw it up on the blog. It’s random, and I don’t have time to look up the settings for every shock. But these types of questions tend to come in sets of three. So maybe I can get ahead of the game with this blog post.
After all, I’d rather be pedaling then answering your stupid questions. 😉
As with all shocks, the air pressure is determined by the amount of sag.
You want to have it set for about 25% sag when you get on the bike (measured when you are not riding or bouncing, just sitting on the bike).
The indicators make this easy. Sit on the bike, and your shock should move to less than 25% of the shock travel length (for a 130mm shock that is 130mm x 25% = 32.5 mm)
The O-ring should slide up to that mark so you can easily check the sag when you get off the bicycle. You’ll just make sure it is hovering around the 33mm mark and add or bleed air as necessary and try again.
The real trick then is to ride it off the road. Setting your sag based on your weight is the core, but each shock handles differently. Sure, you can adjust the rebound to maintain more contact, but the sag is one of those things that affect your riding style. And it’s hard to ride around with a shock pump all the time (although you might do so on your first ride.)
The Fox RP2 are notorious for being too squishy. Some riders have found that they have to shim them out to get them to stop bottoming out. The first step might be to set the sag at closer to 50 or 60% and see how it performs. And then you can try to shim it later.
Of course, this is an older shock, so parts are going to start to be harder to find. At some point, you might decide to do the upgrade.
But, until then, set your sag and come out to one of our rides!!!