I use the Traxxas 4962 alloy big bores = 100 mm eye - eye
Best quality alloy shock out there for the coin... IMO
I purchased the 4962 T-Maxx shock kit (8 total).
Then installed a set of 4 on each my SCX-10 and Wraith.
The SCX-10 uses the unaltered 100 mm shock length.
Whereas the Wraith has longer lower ball ends lengthening those to about 104 mm over-all.
^ (doesn't alter the shock's stroke length)
The Traxxas BB's can be purchased in pairs TRA 2662
But those do not include any coil springs and will need be purchased separately.
110 mm seems a bit excessive...
unless the upper shock's eye mount positioning were raised in compensation.
'cuz without making shock mounting adjustment/relocation...
the suspension will be raised slightly and the COG will suffer.
This can also effect your drive shaft - axle pinion output angle(s).
I noticed the TRA BB's compress more then did the original Wraith shocks.
And so more compression (up travel) is attained by utilizing the BB's.
So either the upper eye mounting locations may need to lowered a tad...
Or in my case... I installed an O-ring spacer on the shock's external shaft
so as to limit that compression some.
^ ( yes, this will reduce the shock's stroke length slightly )
But I needed to because my Wraith was altered to become a 1/6 scale Jeep bodied crawler...
that has fenders that limit the suspension's up travel/ tire clearance.
And either I live with tire rub... or lower the upper shock eye mount.
So as not to raise the chassis COG... I chose the stroke limitation instead.
An open wheel well wrath would not be affected...
and would net more compression or up travel just by installing these.
http://www.rccrawler.com/forum/sale/581392-traxxas-big-bores-new.html