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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
Arctic Cat Pantera 550 Snowmobile (1993-2005)
The Arctic Cat Pantera 550, along with its close relative the Panther 550, was a prominent touring snowmobile offered from 1993 to 2005. These models consistently featured a 550cc liquid-cooled, horizontal in-line, reed valve, 2-stroke engine, designed for comfort and reliability on long rides. Throughout its production, the Pantera 550 saw several key refinements. Early models (1993-1994) were available with Electronic Fuel Injection (EFI), while later versions, such as the 2003 Pantera 550, were explicitly carbureted, indicating a shift in fuel delivery systems. Suspension technology also evolved, with models featuring Independent Double Wishbone Front Suspension and FasTrack Rear Suspension, including the AWS V suspension in the late 90s for improved handling. Comfort features like electric start, reverse, heated grips, and two-up seating became standard, enhancing its touring capabilities. Despite these updates, the core 550cc engine and its touring platform remained consistent. Q: Does this information apply to all Pantera 550 models?
A: This page provides general information. For specific details on your Arctic Cat Pantera 550, please use the year and edition selector above to ensure compatibility.
Maintenance
| Component | Interval | Details |
| Oil (2-Stroke Injection Oil) | Check level daily and with each fuel fill | The oil injection system automatically lubricates the engine. Add oil when the low oil pilot light illuminates. For new or rebuilt engines, the first tankful of fuel should be premixed at a 100:1 ratio. |
| Oil Filter | Not applicable | Two-stroke snowmobiles like the Pantera 550 typically do not have a traditional engine oil filter requiring regular changing. |
| Drive Belt | Inspect regularly, replace if damaged or worn | Drive belts typically last between 2,400 to 4,800 km, depending on riding style. |
| Spark Plugs | Inspect and replace if worn | Always use recommended spark plugs. Incorrect heat-range spark plugs can cause poor engine performance or damage. |
| Air Filter | Clean or replace regularly | Keep the filter clean for good engine power and fuel efficiency. Inspect and service more frequently in dusty, wet, or muddy conditions. |
| Coolant | Check level regularly | Ensure the system is leak-free. Replace coolant as needed. For 4-stroke sleds, a general recommendation is to change coolant every 2 years, but for 2-stroke, regular inspection and replacement are crucial. |
| Clutches (Drive and Driven) | Every 25 hours or 3 months | Inspect and clean. |
| Radiator | Every 100 hours or 12 months | Inspect and clean the external surface. |