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Description
Comet's 8-inch 108 EXP is designed for high horsepower applications up to 150 HP which exceeds the limits of the well-known 7.5 inch Comet 102C. Specifications on the EXP are the same as the familiar 108C. Comet's open faced design has delivered unsurpassed reliability, easy servicing and unlimited tuning capabilities for decades on both stock sleds and on mods. The EXP will handle engagement speeds up to 5000 RPM.
FEATURES
- Wider roller for increased bearing area. Increases durability
- Larger diameter floating cam arm bolt for increased wear resistance
- Uses same tuning parts as 108C
- Built to handle high horsepower engines
- Continual/consistent smooth shifting, after hours of use
- Tried and tested in high horsepower machines
- Weights and springs are not included
Technical Specifications
- MFG. Part Number 217504A
Vehicle Information
Polaris Indy XLT 600 Snowmobile (1995-1999)
The Polaris Indy XLT 600, produced from 1995 to 1999, was a popular snowmobile known for its trail performance. All models from this period featured a liquid-cooled, 597cc (or 598cc) two-stroke, triple-cylinder engine, delivering smooth power and strong acceleration. This engine, manufactured by Fuji Heavy Industries (Subaru), was a core part of its identity. During its production, the XLT 600 underwent significant evolutions. In 1995, the XLT Special model introduced a redesigned long-travel suspension (XTRA-10/12), marking a generational shift in snowmobiling technology. Around 1997-1998, the chassis transitioned from the "wedge" design to the "evolved" or "Gen II" chassis, identifiable by its wider, three-bulb headlight. Furthermore, a crank oiling issue in earlier models was addressed in late 1997 or 1998 with the addition of a fourth oil line. FAQ:
Q: How can I ensure parts are compatible with my Polaris Indy XLT 600?
R: To guarantee compatibility, please use the year and trim selector at the top of this page. It will help you find parts specific to your model.
Maintenance
| Component | Interval | Details |
| Initial Break-In Service | 25 hours, 1 month, or 800 km (whichever comes first) | Check and replenish 2-stroke oil level, inspect and replace air filter as necessary, inspect cooling system fluid level and for leaks. Also includes general lubrication and brake system checks. |
| Engine Oil Level (2-stroke injection system) | Check regularly | Ensure the oil reservoir is always at the appropriate level. |
| Drive Belt | Inspect at 250 km, 800 km, 1 600 km, and 3 200 km. Replace at 3 200 km. | Inspect belt condition and wear. Replace if worn or damaged. |
| Spark Plug | Inspect at 250 km, 800 km, 1 600 km, and 3 200 km. Replace at 1 600 km. | Check firing end condition after engine is warmed up and driven under load. |
| Air Filter | Inspect, clean, or replace annually or pre-season | Inspect and clean or replace as necessary. Check ducts and screens. |
| Cooling System | Inspect level pre-ride and at 250 km, 800 km, 1 600 km, 3 200 km. Replace coolant every 2 or 5 years. | Inspect level, strength, and for leaks. Check hoses and clamps. Replace 50/50 Extended Life Coolant every 5 years, or 60/40 coolant every 2 years. |
| Annual / Pre-storage Maintenance | Annually or every 2 400 km | Perform a general inspection and recommended maintenance before off-season storage for optimal performance and reliability. |