One of the most stressed parts in your sled is the primary clutch spring, and one of the most well-known springs to lose rate and cause your sledâ€™s performance to fall off the map is the square-wire almond-black or the almond-red springs found in various Polaris models. These springs are very stressed in the primary clutch, and are most likely to exhibit a rate change that affects the shifting and performance of your sled.
Many tuners will carry an extra spring with them, especially when weâ€™re talking about RMK models. The clutches can get really hot in extreme mountain riding, and this stress causes the rate of the spring to heat-sag. If your sled is equipped with one of these and is not running like it used to, try a new one and see what happens. Then carry a spare.