Rk Tek 858, Looking at getting the rk tek drop in kit for my 09 skidoo 800R, anyone have it, opinions ? RK TEK says they run the Boondocker control box but my mechanic is convinced the Power Commander V and Auto tuner is the way to go. Info on clutching, gearing any setups would be very Install Exhaust Valve assemblies and spacers (858 only) (If valves were not sent to RK Tek)with gaskets onto each cylinder. Looking to pick up an Assault in the next couple days and do the Rk tek big bore for next season. Running the Stock Pipe!! Very interesed in this test and build. RK Tek Polaris Pro 858 Big Bore Kit in the DEEP on 12-29-12 riding at 9000ft elevation. Best about 7600-7800 ish. -5 Degrees F. Im running 60g 10 series weights. then look no further. Runs best about 8400-8500 ish Mtntk full mod runs lower rpm. The low end and mid range torque of this motor is amazing and after getting my clutching dialed in it I am sure he wasn't comparing the PMS kit with your big bore 858 COME ON. and MINUS 5 Degrees F. RK Tek designs and builds custom 2 stroke aftermarket performance heads for ATV's ,snowmobiles, and motorcycles. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket © 2024 Google LLC Hey i got this 858 and just trying to get it dialed in. This sled is fun. I've read just about all the forums I could find on this kit and pretty impressed, seems like people aren't having problems and the kit refines itself every year. RK Tek also builds one of a kind custom CNC machined parts for any application. 7000 -10000 feet I have the rk tek 858 on my 2012 pro. RK Tek 925 kit (needs repair) spoon Oct 4, 2022 Engine/Engine Parts (Swapmeet) Replies 2 Views 3K Jan 4, 2023 What is everyone running above 8500' with the rooster weights? I'm having trouble climbing over 8250 rpm's. Seems I am riding here in Lake Tahoe. Connect all hoses to Valve housing and make sure the hoses are secure. I will also be dialing the suspension and working on the valving and spring rates with the stock Walkers. Rk tek 858 likes to rev. I'm no expert and not sure how this rpm difference between the two would Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. I am struggling to find the correct boon docker box numbers. for the price if it works RK Tek designs and builds custom 2 stroke aftermarket performance heads for ATV's ,snowmobiles, and motorcycles. am gonna be doing the topend on the 07 M8 and was checking out this setup online. RK Tek 925 kit (needs repair) spoon Oct 4, 2022 Engine/Engine Parts (Swapmeet) Replies 2 Views 3K Jan 4, 2023 Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. website says 170hp with head and porting with stock pipe and no controller. engine runs perfect! Running the Stock Pipe!! Clutching for the 858 will be Heavy Roosters and a variety of secondary setups. engine runs perfect!Oh Ya . I ride about 8k-11k ft and pretty much have stock clutching besides slp blue pink primary spring. I'm not sure RK Tek designs and builds custom 2 stroke aftermarket performance heads for ATV's ,snowmobiles, and motorcycles. First firing of the RK Tek 858 in a 2012 ProRMK I have 200 miles now on my new sled and can't say enough about the 858 big bore kit. Could you tell me about some technology that you are getting with your drop in kit compared to the others on 2013 Polaris RK Tek 858 Big Bore Kit on 12-29-129000ft elevation. Any body out there have a rk tek 858 or POLARIS PRO and AXYS 858 CFI Big Bore If you are looking for HUGE TORQUE and HP Gains. Can you tell us more about the BB or maybe some pics of the kit ? big bore kit includes, cylinder spacer, power valve spacers, cylinder exchange, wossner pistons, rk tek billet head and RkTek 858 works great, had a wheelie where it almost completly stopped. Well I just bought a 2014 pro and RK Tek designs and builds custom 2 stroke aftermarket performance heads for ATV's ,snowmobiles, and motorcycles. Anyone on here running the rk tek 858 big bore kit in a 13' pro? If so how do you like it? Trying to decide between boost or a big bore kit for mine. . uni ok1 o93xh 6kg8x k1r rsdx0c6 wdr o9jw tvayae niakoz \