STM Ski-Doo TRA Primary Clutch Spring - White 280/420 SDPS-3

• 2.9" load 280 lbs
• 1.6" load 420 lbs.

• Quick and easy tuning of engagement and top rpm with performance adjusting primary (drive) clutch springs
• .207 in. chrome silicon construction with 5 percent tolerance - the lowest in the industry (including OEM)
• Primary (drive) springs are shot-peened for durability

• 2.9 inch load - 280 lbs.
• 1.6 inch load - 420 lbs.

Included Items:

(1) White primary clutch spring

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