4-Stroke Engine Benefits
With the ProStar S4, enjoy all of the benefits of a 4-stroke engine including ease of maintenance and extended range.
Durable & Easy to Own
ProStar S4 was engineered to provide riders the easiest ownership experience with great fuel efficiency, long service intervals, and the rock-solid dependability all ProStar engines are known for.
Fun & Spirited Performance
The ProStar S4 is engineered in the under 100 horsepower class to deliver a fun and approachable riding experience for both new riders or experienced riders who prefer to cruise the trails at their own pace.
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Featured Models
2025 INDY Adventure
Trail Performance and Adventure You Can Share
Starting at
$16,999
US MSRP