Services

Achieving maximum performance from any engine requires precise machining expertise. At LEGEND PERFORMANCE INC. our specialty is close tolerance precision machining. Most machine shops today fail to understand the importance of precision machining and it’s effect on the performance and reliability of the two-cycle engine. When the time comes to put your trust in a company to serve your machining needs, absolute quality is a must!! Our reputation and performance gains associated with our services has been documented by many racers nationwide in a variety of competitive sports. Many aftermarket performance shops turn to us for our “aerospace quality” craftsmanship and innovative machining techniques. We have a reputation for providing “first time” quality in all our work. We are proud to offer this same kind of precision craftsmanship to you for your performance snowmobile.

Give us a call today and experience the full potential locked away inside your machine!!

PORTING

Our porting services are the latest in design and development verified by extensive flow bench, dynamometer and field testing. We offer the finest quality finished product and highly recommend our precision boring/honing services to compliment our porting packages.

Available in Fast Trail, Lake Race or Full Mod spec. Call for pricing


PRECISION BORING / HONING / SLEEVING

Looking for some “free horsepower”? Our boring and honing procedures are so advanced that our competitors use us!! Our equipment is specially set-up for high accuracy and precision!! We guarantee absolute cylinder roundness and perpendicularity on all our jobs.  Top it off with our “Race Prep” service and we guarantee a noticeable performance boost!! Perfect ring seal is the key to maximum engine performance and a well known fact among the top engine builders in the country! Trust your cylinder work to the company who won’t settle for less than perfection!!

Tolerances = Max out-of-roundness not to exceed .0002 (two-tenths of one thousandth)
Taper not to exceed .0002
Perpendicularity not to exceed .0003
Precision Boring/Honing
Race Prep (Diamond Stone Plateau Finish)
Sleeving (Includes sleeve installation, final sizing and port match)

Note: LPI can build custom chrome-moly sleeves for any application. Our liners are much stronger and tougher than conventional sleeves and used by many racers for optimum performance. LPI chrome-moly sleeves are of a high tensile strength heat-treated alloy which is significantly more durable than cast sleeves yet still boreable.


NICASIL CYLINDER REPLATING

Damaged nicasil or chrome bores? Let LPI replate you worn cylinders to better than new condition. Send stripped down cylinders (no studs or gaskets) and allow 2-3 weeks for turn around.


PRECISION CRANKCASE LINEBORING

LPI can linebore your Polaris twin and triple crankcases for maximum performance and reliability. If you have reoccurring crank failures, your linebore must be verified and corrected. Crankshaft life is directly proportional to it’s support, a loose linebore crush fit will not properly support the crank thereby shortening it’s life. Most crankshaft related problems can be attributed to improper factory linebores. LPI offers a free line bore inspection and can significantly improve on factory tolerances. A must for any performance application!!

Note: Polaris XLT/XCR 600 cases with their thin design castings have poor linebore tolerances. If you have or plan modifications to your XLT/XCR 600, be sure to have the linebore verified!!


CARB BORING

LPI can bore your carbs in either straight or taper configuration. Send stripped down carb assembly and one throttle slide. Additional charge for carb disassembly/assembly.


COMPLETE CRANKSHAFT REPAIR FACILITY

LPI provides the highest quality crank repair and rebuilding services found anywhere!! We offer optional crank balancing and Stroking services also. LPI stocks upgraded performance crank main bearings and forged connecting rod kits for popular models. Priority service available at additional cost. Need a custom crank built? Give us a call.


BIG BORE KITS


CHROME-MOLY STROKER CRANKS (POLARIS)


CLUTCH RESURFACING / BALANCING


CUSTOM ENGINES-RACE OR TRAIL- MILD TO WILD


DYNO SERVICES


PERFORMANCE PARTS INSTALLATION / SET-UP


TECHNICAL SUPPORT


TIG WELDING


4 AXIS CNC MACHINING / DIGITIZING