alwaysforyamaha
New member
I am finally going to do it. I bought a 156 challenger, and was wondering if anyone had any opinion on the different tunnel extensions out there. Specifically MPI or Hartman, but any info is appreciated. I am still possibly kicking around the idea of a MPI tunnel, but I am not crazy about spending the extra 800 dollars. Any info or tips would be appreciated.
jlebrun_05
New member
I got the hartman kit and loved it. Tom is a great guy to deal with and everything was straight forward and easy to install. I did the same thing, a 156 challenger, and I got the tunnel extensions and rail extensions from hartman, and my drivers from wahl bros. One thing I liked about hartman over mpi, is that the rear cooler stays in the same spot and no hose extensions are needed, but not really a big deal. I dont know much about mpi, but the service with hartman is awesome, its great to get ahold of the owner himself when you call them on the phone.
Last edited:
xsivhp
Active member
Tom is Tops IMO as well!
Roost 'Er
Member
Im thinking about stretching my SRX this year, have any pics of the underside of your tunnel, and the bumper? thanks
jlebrun_05
New member
What it takes to do a track swap with extension:
Underside of the tunnel
This is AM, when we finished:
Underside of the tunnel
This is AM, when we finished:
Roost 'Er
Member
jlebrun_05 said:What it takes to do a track swap with extension:
Underside of the tunnel
This is AM, when we finished:
Haha yeah figured it wouldnt be more then a case of coors.
The thing with me is im running a edge rear skid so kinda mix and matching, looking at Tracks-usa rail extensions, then MPI yamaha tunnel extensions, then drop brackets and 8t Anti-ratchet drivers.... good little project.
Oh yeah did i mention i JUST put the edge and a brand new hacksaw with 192 picks in last season haha, not enough grip on loose/trail set-up so im thinking about changing already. Its UNBELIEVABLE on hardpacked and lakes but i lost a race due to not hooking up on loose stuff so things must be changed.
hello. my name is jean guy. i have srx. i search the front radiator in the spoket. i search used. its possible you help me. ?
PPS. inc
New member
Tom has endless info for you and he's a yamaha guy. Very well engineered and machined. Hartman. Inc is the way to go.
PPS. inc
New member
Ok. From 2008. My bad. Thats a nice red viper in the pic tho.
I bent our own tunnell extension from bulk aluminum of the same size. Total cost including rivits was $38.00 This was on both the SXR 121 to 128 and the Viper 121 to 136.
