Product Details
Skidoo's 850 is a strong engine with some performance left on the table.
So at Terra Alps Racing were able to get some more ponies out of that 850.
850 PORTING - Get some added mid and top end HP gains from your 850 with cylinder porting. $800 cdn. or $550 us
With most porting most guys 98% are just guessing. Dont understand proper angles and shapes of ports.
It takes years of trial and testing to get it right. So dont waste your money and engine guessing, have Terra Alps do it right !
Y-PIPE - Gain mid range to top end power with a Terra Alps Y pipe. For stock pipe application $399 cdn. or $290 us
SINGLE PIPE and Y PIPE - Gain power thru mid to top end, 10+ hp with this kit. $1100 cdn. or $850 us
(doesnt work with other pipes and Y pipes)
With Narly lightweight muffler add $350 cdn. to this kit.
NARLY lightweight muffler. $399 cdn. with temp sensor
920 BIGBORE - Real power is what you pay for! Cylinder gets bored, welded, modify and fully port the cylinder.
Machine the stock head to run pump gas at your riding area elevations and fuel demands.
Head machined for race fuel is available. Call or email for your build
Machine exhaust valves, comes with cast piston kits and base gasket. $3295 cdn.
Fuel adder is recommended - Terra Alps fuel adder or EJK fuel adder or PC6 fuel adder or ECM flash tune
Recommend High flow Y pipe for big bore.
Full Pipe kit gains extra power, good for full effort race engines
Clutching available
We can supply cores so you dont have to send in your cylinder.
If you have a pipe kit already we can work with what you have.