So have a bought a new bike (to me) which has a coil shock. Current spring is a nukeproof 450 x 2.5. I need a 500 on it. But on looking on the website the shock says it was originally shipped with a 2.8.
Does it matter if I get a 2.8 or 2.5 and what difference does that 0.3 make if any in performance/use?
Thanks
Potentially a huge difference. What frame is it? You need to know the stroke of the shock, then you get a spring to match that. If the stroke is 2.8” but the spring is only able to compress 2.5” things can end up feeling really nasty.
OTOH, 2.8” is usually the realm of DH bikes, so hopefully the shock is just 2.5” stroke
2.5 is 63mm stroke, my AM9 at 150mm travel is 65mm stroke so I run a 2.75 spring, so wouldn't agree with the DH bike comment above.
You do however need the correct spring for the shock stroke.
Hi,
Thanks for the reply. It's a DH bike a 2018 Transition TR11. Their website says it has a Rear Shock Size of 222mmx70mm.
So best going for 2.8 (70mm = 2.76inches) or do I need one that says 70mm on it?
Thanks again for any advice this whole coil thing is so different.
Yup, go for a 2.8 or even a 3” if you have room for it (no advantage of doing so, just might give more options)
The dimension being metric or imperial doesn’t matter as long as it’s the right length or longer
Perfect, thanks.