I picked up an RZ 120 four for my kid (happy 10yo, soon to be 11).
This is a made in Asia model as it has a very small made in Taiwan sticker at the BB.
As I have the Rize 140 (size large) to compare it to, I'll include some comparisons.
First off was the build process. I took pretty much the whole bike apart and applied loctite to critical suspension fasteners, yes they already have the "dry" type from the factory but I have found that type to often be insufficient. A little worrisome was the rear swingarm didn't move completely freely through it's arc with the shock removed, having a small 'kink' at both the lower and upper travel range. This kink went away when a few of the link bolts were loosened during my disassembly. On reassembly I was extra careful to get the link bolts tightened properly and some of the 'kink' remained once the bolts were tightened completely. I doubt that it will be of performance concern on the trail, very minor in the big picture of 'things'. Just a note to myself about maybe dwindling or loose quality controls (sorry, Cdale). I don't recall any added friction on my Rize 140 when I went through the same type of 'build' process.
Next up, once the bike is fully reassembled...... it's rather heavy for a XC machine....... I think 33lbs. for this size small with all the stock components on there, but then it's a lower priced bike.... retailing at 1,500 or so. I have already made weight cutting measures by installing alloy middle and small chain rings and a higher grade BB.... both parts I had 'laying around'. ...... The Deuce 15qr. fork is heavy....... scratching my head on when to upgrade that. The fork does seem to offer good performance.
The next issue I had to deal with was the X-Fusion rear shock had way too much compression damping (I guess for my tastes, per X-Fusion)..... the rear suspension didn't respond to bumps when sag was set properly, only moving when I jumped off something or pushed down hard with my body weight. So, X-Fusion lowered the compression damping per my request and so far so good, it has become a more plush ride. Also, it seems they have somehow turned the lockout lever into a kind of (shall I say) Propedal where it doesn't lock out the shock completely any longer (thanks!). No need for lockout on my Rize 140, I see no reason for lockout on the RZ120. Moving the "rebound" red dial seems to change both the rebound and compression when adjusted, not sure if this was their intended modification after the servicing, but this is a rather simple shock (so, I will be thinking of the red dial as a damping adjustment rather than just a rebound adjustment, coupled with the now "propedal" I think it will work just fine now).
My overall impressions of this bike are I like it, minus some of my concerns here. Although, I'm liking my Rize 140 more (because it's lighter..... but, it was more expensive). The Shimano brakes on the 120 are impressive so far (yes, it has a 180mm on the front over my 160 on my Rize). The 15QR fork with 1.5 steerer definitely feels more solid compared to my Rize 4 setup (maybe too solid). I don't plan on riding this bike much, just setting it up for my kid to ride (yes, a lucky kid everyone is telling me).
At this point I am only writing with little actual riding the bike. More to come.
..... and WOW!, after riding the RZ120 with changes made (as in picture #1 below) with my old XTR cassette, plastic body pedals and 1.95" super light weight tires it is down to 30.6lbs. and it rides really really nice, I'm thinking the suspension performance feels better than my 140 Rize right now, feels plush with good bottom out performance, just what I look for with my 140 (which I can't really peg down most of the time).... I could drop more weight if I really wanted to ($) but with light tires my kid should be moving pretty well on it... as he rides it (in picture #2)...... (picture #3) is my Rize 140 fitted with 2 pound tires (and HG-50 cassette) to "level the playing field" which brings my Rize up to 32 lbs. on my scale.
I'm now wondering if I can change my Rize to a 120 by switching the link/shock/etc.... I think I like the way the smaller length shock on the 120 "ramps up" quicker. Or not, ..... I guess a better shock tune on my Rize and a better front fork could also be an option. (just dreaming here)
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Thread: Picked up a '11 RZ120 four
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