SPI SM-05279 Exhaust Valve Cable for 2-Stroke Snowmobiles

The SPI SM-05279 is a replacement exhaust valve cable designed for 2-stroke snowmobile engines equipped with exhaust power valve systems. These systems — commonly known as RAVE valves, power valves, or exhaust control valves — use a cable-actuated mechanism to adjust exhaust port timing based on engine RPM, optimizing power delivery across the powerband.

SPI (Sports Parts Inc.) is a leading manufacturer of aftermarket powersports replacement parts, and this cable is engineered to restore proper exhaust valve function when the original cable stretches, frays, or breaks. It is manufactured to OEM-equivalent specifications for reliable, long-lasting performance.

Key Features:

• Direct replacement for worn or damaged OEM exhaust valve cables
• Compatible with 2-stroke snowmobile engines featuring exhaust power valve systems
• Long cable design to accommodate full routing from handlebar or actuator to valve assembly
• Manufactured to OEM-equivalent specifications for proper fit and function
• Made in Taiwan to SPI quality standards
• Helps restore proper exhaust valve operation and engine performance

Replacing a worn exhaust valve cable is essential for maintaining peak engine performance. A damaged or stretched cable can prevent the power valve from operating correctly, resulting in reduced throttle response and loss of power in the mid-to-upper RPM range.