Mtbr's 2016 Winter Biking Gear Reviews and Roundups





X-Fusion O2 RCX Rear Shock

3/5 (2 Reviews)

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Product Description

Updated compression and rebound tuning based on rider feedback over the last year from on and off the race circuit. Knobs and adjusters with more aggressive detents to ensure the rider does not miss the intended adjustment position. Seal designs and materials optimize performance and increase durability. Chassis ensures consistent quality during production assembly. Air sleeve provides a lower air-spring compression ratio.

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Reviews 1 - 2 (2 Reviews Total)

User Reviews

Overall Rating:2
Value Rating:2
Submitted by Alainzen a All Mountain Rider

Date Reviewed: July 20, 2014

Strengths:    None so far

Weaknesses:    Difficult to tune
No "happy all-around" set up
Noisy when suspension extend

Bottom Line:   
I installed the shock on my Devinci Dixon 2012 and went for one of my regular ride of 22 miles ride / 3100 ft climbing and I could not get my bike's rear suspension to work normally despite all my attempts to set up the shock.

I am 200lbs and I tried all the possible set up to adjust the sag and rebound. By the way, this is not my first X-Fusion rear shock. A "hard stop" noise (metal to metal contact) can be heard when the suspension extends after compression if I set the initial sag at 20-25% (10-13mm / 50mm). It disappeared with a 30-35% set up but ended up being a way too soft and affecting the geometry.
On the trail, the rear shock is not predictable by tending to lock (or not) over the rocky section regardless of the damper adjustment position (I had a pump with me). I never had this problem with the Fox Float RP23 that the X-Fusion shock is supposed to replace. It is very difficult to keep control of your bike when the rear suspension decides to lock over baby head size rocks. On the other end, the rebound also seem to have a mind on his own by not being predictable feeling that the suspension is not controlled and kicking you when you go over 3-4 smooth bumps in a row.

I am not happy at all with my ride with X-Fusion as the trails that I nailed on a regular basis became a challenge using the same bike and setup minus the rear shock. It is just not fun. Now, let's see how X-Fusion handles my claim...

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Duration Product Used:   22 miles

Price Paid:    $400.00

Purchased At:   Universal Cycles

Similar Products Used:   Fox Float RP23, Fox Float RP23 Boostvalve, Rock Shox

Bike Setup:   Devinci Dixon 2012

Overall Rating:4
Value Rating:5
Submitted by martylane a Cross Country Rider from NorCal

Date Reviewed: March 28, 2011

Strengths:    Smooth stroke, wide range of rebound adjustment, 3 levels of compression platform damping.

Weaknesses:    No full lockout; can't fine tune compression preset levels.

Bottom Line:   
I bought this shock as a replacement for the X-fusion O2 R shock that came stock on my Pitch. The Pitch bobs like mad when hammering out of the saddle, so I was looking for some compression damping. This RCX is a later model X-fusion shock than my O2 R. It has the same wide range of rebound adjustment, but doesn't seem to dive into the mid range as quickly, so I run slightly lower air pressure with the RCX. There are three preset levels of "platform" damping. At the firmest level, the bike still bobs a bit when out of the saddle, but the platform is very firm. You wouldn't want to use this setting on rocky trails.

Mostly, I wanted the platform for long road and firm dirt road stretches ridden to access trails. The firmest platform setting handles this well, but I sometimes wonder if I'd be better off with the RLX, which supposedly has full lockout and a single platform setting. Having three levels of platform from which to choose on the RCX, though, turns out to be a really nice feature I'm not sure I'd trade this feature for full lockout. I'd always assumed the Pitch pedals just fine when seated, but being able to add a little platform, or a little more noticeably enhances efficiency in some situations, like when climbing on rough terrain. I find that I do use the three levels of compression damping for different situations. Full open on descents is sensitive and smooth, and you can't beat the price. No complaints on this shock!

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Favorite Trail:   Downieville trails

Duration Product Used:   Less than 1 month

Price Paid:    $260.00

Purchased At:

Similar Products Used:   None (past 7 years spent riding an Epic.)

Bike Setup:   2010 Specialized Pitch

Reviews 1 - 2 (2 Reviews Total)

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