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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 ZR 580 Snowmobile (1993-1997)
The Arctic Cat ZR 580 snowmobile, produced from 1993 to 1997, was a renowned performance model in its category. It featured a 580cc liquid-cooled twin-cylinder engine, offering a dynamic riding experience. This model maintained its consistent engine displacement throughout these years but underwent significant evolutions. While the engine displacement remained the same, the primary generation break was the introduction of Electronic Fuel Injection (EFI) in 1995, available as an option. This innovation allowed for increased horsepower, reaching nearly 100 hp for EFI models, compared to 90-95 hp for carbureted versions. The 1997 model even introduced the batteryless EFI (BEFI) system, a reliable and lasting technology, featuring triple exhaust port cylinders to optimize performance. FAQ:
Q: How can I ensure this part fits my Arctic Cat ZR 580?
A: To guarantee compatibility, please use our year and trim selector on this page. This will help you find the specific parts for your model.
Maintenance
| Component | Interval | Details |
| Oil Filter (oil injection system) | As per owner's manual | For 2-stroke engines with oil injection, this typically refers to a screen or filter within the oil injection system. Specific intervals are detailed in the manual. |
| Drive Belt | Inspect regularly; replace every 1 to 3 years | Inspect for cracks, tears, fraying, or uneven wear. A new drive belt requires a break-in period of approximately 30-40 km at moderate speeds. |
| Spark Plug | Annually or before each season | Recommended spark plugs generally include NGK BR9ES or BR9EYA. More frequent replacement may be necessary for hard riding or racing. |
| Air Filter | Inspect every 25-50 riding hours or more frequently | Inspect more frequently in dusty or muddy conditions. Clean if reusable; replace if damaged, remains dirty after cleaning, or has been exposed to water. |
| Coolant | Inspect daily; replace every 2 to 5 years or at least once per season | Check level and for leaks. It is important to use an ethylene glycol-based, automotive-type coolant. |