What Rear Sus?

throttlemonkeyy

Hi,
I wouldn't say im new to biking but to be honest i dont have a clue about rear suspension. Looking to buy a "RockShox Monarch 4.2 Rear Shock (2008)". Now the only problem i have with buying this shock is the diffirent sizes. What do they all mean?

165x38mm
190x51mm
200x51mm
216x63mm

Will only a certain size fit the frame of my bike? If so how do i check to be absolutely sure im buying the correct one?

Any help would be much appreciated.

Cheers
Dane

The Northern Monkey

what bike is it for?

throttlemonkeyy

Its a Specialized FSR XC i thinks it the 2006 or 2007 model

mtbikerboy

you need to measure the length of the existing shock from eye to eye (the first figure), and the length of the shaft on the shock (the second figure).

i think on that bike it should be 7.5''X1.75'' (about 190 X 50mm)

dave_hill

throttlemonkeyy wrote:

Hi,
I wouldn't say im new to biking but to be honest i dont have a clue about rear suspension. Looking to buy a "RockShox Monarch 4.2 Rear Shock (2008)". Now the only problem i have with buying this shock is the diffirent sizes. What do they all mean?

165x38mm
190x51mm
200x51mm
216x63mm

Will only a certain size fit the frame of my bike? If so how do i check to be absolutely sure im buying the correct one?

Any help would be much appreciated.

Cheers
Dane

The second figure is actually the nominal stroke of the shock from fully extended to fully compressed, not the length of the shaft.

You also need to factor in the correct mounting hardware too, as the shock will not come with any. Your best bet is to ask whoever you're buying it from.

BOYDIE

FSR Xc is 165x38.Its a 100mm travel bike,make sure you get the right size mounting hardware for it.

throttlemonkeyy

brilliant. Thanks for the info. Wont be buyin for a while so iw ill be doing more research anyway.

Cheers

throttlemonkeyy

does anyone know where i can get mounting harware for a rock shox bar 2.1. Lookin all over google and i can't find it anywhere.

BlackSpur

What is your current shock? Bars are crap - worse than the standard shocks on FSRs

throttlemonkeyy

current shock is "fsd HARD SHOCK" looks crap and it's well and trully half past dead. any reccomendations for a shock at around £130?

pdid

If i were you i`d just get your current shock serviced.

supersonic

I'd get a new air shock.

BlackSpur wrote:

What is your current shock? Bars are crap - worse than the standard shocks on FSRs

I'd disagree with that. Basic they may be, but tend to be smoother and less spiky than say an Ario. I used to use one, perfromed very well.

throttlemonkeyy

thanks super. Just lookin for a cheap one due to the shock i have is goosed and the bushes are near enough gone. Going out to glentress today so will pop into Alpine bikes on way there to see what that guy says.

Cheers

BlackSpur

supersonic wrote:

I'd get a new air shock.

BlackSpur wrote:

What is your current shock? Bars are crap - worse than the standard shocks on FSRs

I'd disagree with that. Basic they may be, but tend to be smoother and less spiky than say an Ario. I used to use one, perfromed very well.

Maybe the comment was a tad unfair - the two bikes I have seen/ test ridden with them were in pretty sh!t state!

davree

What about this:

http://www.chainreactioncycles.com/Mode ... elID=11698

it's 165 x 38 and if Boydie is right it's the correct dimensions for your bike, you will just need the correct moutings for it.

throttlemonkeyy

i was looking at that one... looks great but the size of the expantion tank is too large for my bike. Also went to a bike shop "Alpine Bikes". They say that my bike is a 152mm as that is the current size of my shock and going up to a 165mm would either make the shock useless or possibly damage my bike. Not sure if i want to take the risk

Banned!

if you put a shock on thats far too big for the bike it will lift the frame at an angle and wont compress properly. it wont damage the bike but it will wear any bearings or bushing in the pivot points down a lot quicker. unbalanced. it wont be too noticable but you might feel a little unbalanced and the bike will feel awkward and unresponsive.

dmjb3

All - the 2007 FSR XC shock is 7" x 1.6". Or 178x41mm. Its Specialized specific and non-upgradeable...

dmjb3

All - the 2007 FSR XC shock is 7" x 1.6". Or 178x41mm. Its Specialized specific and non-upgradeable...

throttlemonkeyy

sorry but you are wrong. Measured the one i have already and it is 152. been to many shops they all have said its 152 so it is upgradeable just cant afford the shock i want at the moment, so i will just have to wait.

dmjb3

throttlemonkeyy wrote:

sorry but you are wrong. Measured the one i have already and it is 152. been to many shops they all have said its 152 so it is upgradeable just cant afford the shock i want at the moment, so i will just have to wait.

I'm just trying to help!

throttlemonkeyy wrote:

Its a Specialized FSR XC i thinks it the 2006 or 2007 model

The 2008 Manual (which looks like the same bike as 06/07 but different colours) is available on the Specialized website - see http://cdn.specialized.com/OA_MEDIA/pdf/manuals/08_FSRxc_Myka_Manual_r1.pdf

Turn to page 10... It states 7" by 1.6", which as I stated above, is not a common size. It is possible the 2006 used a different size, so you might be correct, but measuring shocks is not easy on the bike, and I'd rather you did not spend a load of cash on the wrong bits!

GHill

If it is a Spech specific size (my '08 was) you could try asking the company (or a dealer) if they'd sell you an upgraded one, doubt it would be cheap though.

Might be worth figuring out which year it is from (google and the colour of the frame may help) to find official docs of the shock size - as alluded to above, you don't really want to get the wrong one.