827 (172HP)Big Bore Kit for Ski-Doo 800 Twins

RK Tek Has developed an 827 (REALLY an 830cc) kit for the 800 Twin Engine. While we were not planning on big performance improvements in this little over-bore... we were soon proved WRONG! In side by side (stock 800 pipe) bench-mark testing against our RKT Mod 800 Engine Kit .. the 827 would pull 5 lengths on the hills and flats over our modified 800. This came as a HUGE surprise to us but the results do not lie. We were very pleased to say the least!!

This kit, on a 2001 MXZ 800 was dyno'd in 2005 at Dyno Tech Research in New York and showed 166.8HP with the STOCK Pipe and can. That is over a 40HP gain from the 2001 engine's power (124-130HP) For more on this kit and that dyno session please visit www. dynotechresearch.com and read a bit more HERE

This 827 kit is unlike all other big-bore kits. It uses your stock cylinders and does not require sleeving the cylinders. When you sleeve the stock cylinders.. transfer tunnel area is GREATLY diminished. This is not a good thing! One of the short-comings of the Series III engines is the transfer tunnel area... IT IS NOT LARGE ENOUGH! Proper porting can partially resolve this short-coming BUT once you sleeve the cylinder.. the tunnel area is greatly diminished and can NOT be restored. Aftermarket cylinders can address this issue but are quite expensive!

Our 827cc kit does not effect the transfer tunnel area. The stock cylinder is stripped of the plating, bored out to 83.5mm and then re-plated. It is a TOTAL sleeper!! T

For the 2008 season this Piston will be CUSTOM made for improved reliability and Performance. It just keeps getting better!

The cost of the kit is as follows:

Strip/Bore/Re-Plate stock cylinders (2):    			 $535.00/pair

83.5mm CUSTOM MADE pistons with wrist pins and rings     	 $335.00/pair

Custom RK Tek Billet Head:                  			 $400.00 complete

Custom Base gasket:                        			 $25.00

Modification of RAVE valves                			 $75.00/pair

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                               		       TOTAL:      $1370.00

Options-- Great addition but NOT required!

Full cylinder port: (CNC PORTED(clicky) )    $600/pair

Caged wrist pin bearings                     $32/set