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Polaris XCR/Ultra Big Bore Cylinder

Polaris XCR/Ultra Big Bore Cylinder


Polaris XCR/Ultra Big Bore Sand Cast Cylinder. Available up to 84mm bore for...
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Engines & Modifications
    Product Name   Buy Now 
 1000 MACH Z TWIN   1000 MACH Z TWIN 

The Mach Z 1000 trail porting will gain 7-8 HP, and the twin pipes will gain 13 HP @ 7800-8000 RPM\'s netting a total of 190HP. We have available the twin silenced trail pipes into two individual silencers or twin pipes...

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 1006 & 1019 RACE ENGINE   1006 & 1019 RACE ENGINE 

The 1006cc/1019cc open race engine has a very wide power band. The 1006 will produce 266 HP @ 9200 RPM's 143 lbs. of torque and the 1019 will deliver 270 HP @ 144 lbs of torque @ 9200 RPM's. These motor packages...

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 1025 MACH Z OR 1100 MACH Z STROKER BIG BORE   1025 MACH Z OR 1100 MACH Z STROKER BIG BORE 

The 1025 and 1100 trail big bore kit utilizes a complete new rave valve nickicil cylinder and head. The 1025 uses the 809 stock stroke crank and stock carburetors, and produces 200 HP @ 8800 RPM's on pump gas. The 1100...

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 1100 MACH Z TWIN BIG BORE   1100 MACH Z TWIN BIG BORE 

We have decided to discontinue this kit. We are still going to have parts available for the kit.

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    1100 POLARIS BIG BORE KIT FOR TRAIL FOR 680 ULTRA & 700/800 XCR 

This Polaris big bore trail kit will produce 200 HP @ 8800 RPMs and runs on pump gas. The kit includes: three new single heads, cylinders, rave valves, pistons & rings, modifications to the base, and a set of triple...

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 1200 POLARIS WATERCRAFT   1200 POLARIS WATERCRAFT 

1200 Polaris Watercraft we can build pipes with the motorplate supplied, carry a Crank Shop Single Cylinder Sandcast Head, and aluminum manifold plates straight or angled.

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 1200 SKI DOO 4 STROKE   1200 SKI DOO 4 STROKE 

The header is a bolt on piece and is available in stainless steel or steel that is ceramic coated. Ceramic coated header weighs 5 1/2 lbs., and Stainless Steel header weighs 6 1/2 lbs. Recent dyno testing shows a 7-8...

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 1240 MACH Z TWIN BIG BORE   1240 MACH Z TWIN BIG BORE 

The 1240 Big Bore Kit will produce an additional 27 hp over a piped and ported Mach Z. The package consists of new cylinders (individual), head, 98mm coated pistons, and silenced trail pipes. Send your crank, crank...

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 340/440 RACE MODIFICATIONS   340/440 RACE MODIFICATIONS 

We have NO pipes available for the stock engine. We were unable to significantly improve on the stock pipe without losing the much needed torque in a small cc engine. Modified engine package for snowcross or lake...

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    500 MXZ REED 

We have NOT developed any trail modifications for this motor. WE ONLY have race modified packages available at this time. The improve stock and the prostock package make 130 hp @ 9600 rpms 71 lbs. of torque. The RV SLS...

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 500 POLARIS RACE ENGINES   500 POLARIS RACE ENGINES 

Package consists of pipes, porting, & head inserts. The 500 race motor produces 126 HP @ 9400 RPM's with 71 lbs of torque.

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 583 MXZ, 583 FORMULA Z, 583 SUMMIT   583 MXZ, 583 FORMULA Z, 583 SUMMIT 

We have developed a set of twin pipes for the 583 engine that maintain the original torque at a higher RPM with a net gain of 8-9 HP at 8300-8500 RPMs. The pipes work good on the dyno, but it takes a good tuner to see a...

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 600 FIII TRIPLE   600 FIII TRIPLE 

The 600 engine is very easy to make more HP, but not so easy to make more torque. Torque is what makes a heavy small cc sled faster not necessarily HP. With our pipes we came up with a compromise maintaining original...

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 600 HO REV   600 HO REV 

We have found success with the single pipe, porting, and Team clutches on the Revs with gains up to 10 sled lengths over stock. Trail porting is around 6-7HP, single pipe 3-4HP, and single pipe muffler is weight savings...

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 600 MXZ   600 MXZ 

The 2 cylinder Rotax cylinder reed valve designed motor with the reed valves mounted onto the cylinders offers more power than the 583 rotary valve motor. Twin trail pipes will net 10 HP with 3-4 pounds of torque @...

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 600 POLARIS SNO CROSS PACKAGE   600 POLARIS SNO CROSS PACKAGE 

The Polaris Sno Cross Package will produce 150 HP @ 8800 RPM's and 92 lbs of torque. . Package includes head inserts, head machining for inserts or sand cast head (depending on year), cylinder porting, base tunnel...

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 600 RS MXZX   600 RS MXZX 

We have race modications for the 600 RS to help the motor gain 6-7HP. Send us your cylinders, rave valves, and top half on the crankcase. We recommend using the Ski Doo factory race pipes with these modifications. We do...

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 660 BIG BORE KIT FOR THE POLARIS  600   660 BIG BORE KIT FOR THE POLARIS 600 

This trail package will produce 14 HP over a stock 600. The package consists of boring, porting, replating cylinders, head modifications, pistons, base porting & carb boring. The pistons used are a stock 700 piston that...

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 670 MXZ, SUMMIT, FORMULA SS & MACH I   670 MXZ, SUMMIT, FORMULA SS & MACH I 

The 670 engine is Rotax's best engine combination. It responds very well to modifications. Twin pipes net 8-10HP and 3-4 pounds of torque @ 8200-8300 RPM's over the single pipe. We also have a thicker base gasket which...

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 700 MACH 1 & 700 FIII   700 MACH 1 & 700 FIII 

The stroke and bore combination of this engine has good balance between torque and HP. Responds very good to modifications and RPMs. Our trail pipes make 7-8 HP at 8600-8800 RPMs. The pipes can be run into the original...

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