Terra Alps Racing Inc

Polaris 850/900 boost stock cheater heads. Improver classes.

Dont believe your buddy when he says its stock !

Old school 440 fan cooled bored, (520 shhhh🤫) ported, heads machined with orings, set up for C12 race fuel.
Leaf spring racer.

Injector flow test and cleaning.
Needs to be done with our efi sleds and all powersports toys.

900r Boost , fully ported, the best head in the business and highflow Y pipe. Time to make some power.

On the snow with same clutching and tune burandt had in the sled. Owner added 4.5 grams to each weight and still revving 8500+ rpm. Thats big power 40+

2026 Arctic cat 858 with Terra Alps muffler.
Great fit and finish, not loud.

Busy summer lots of engine kits to build. Bigbores and full race engines.
Going thru them stripping nikasil, welding and cnc porting before hand porting.
Got a few engines in, done else where , non ported bored out cyls to get fully ported and built right.

Congratulations to Lucas Axelsson racing watercross in Sweden on the weekend with Terra Alps Racing horse power !
Winning heat C and D open mod races.
Red Polaris Axys. 909 bigbore stroker...

Looking for skidoo 850 23' newer cylinder and head cores. Can have some damage
Cyl #420 413 575
Head #420 413 295

Thanks,

Polaris BOOST turbo fully ported, welded cylinder and cases, new nikasil, custom hone cylinder. Highflow y pipe.
Let her breathe and stretch her legs !