After a full season of riding the 2025 Polaris Patriot Boost RMK Khaos 155, it’s time to take an in-depth look at the enhancements and modifications Polaris introduced for this model year. With a 7-pound weight reduction compared to the 2024 model, Polaris has focused on refining performance, handling, and rider experience. Some changes are game changers, while others come down to personal preference. Let’s break down how the 2025 RMK Khaos 155 stacks up.
2025 Patriot Boost RMK Khaos 155 Specs
- RMK Khaos—Ghost White Metallic/Radiant Green
- Patriot Boost engine
- 155-inch track length
- 3.25-inch Series 9 track
- Walker Evans Velocity Shock
- 7S Display
- 5-inch Pro Taper handlebars—low
Pro-Lite Seat—Lower for Better Maneuverability
New for 2025, Polaris introduced the Pro-Lite seat, which sits 1 in. lower than previous designs. While the weight savings are a plus, the real benefit is improved rider maneuverability.
- A reduced seat height enhances maneuverability, enabling riders to more easily transition over the seat during advanced mountain riding techniques.
- A lower seat makes side-to-side transitions easier, allowing riders to shift their weight quickly.
- The reduced height provides better leverage for aggressive body positioning, enhancing control in technical terrain.
New Throttle System—Improved Feel & Reduced Snow Buildup
For 2025, Polaris redesigned the throttle system across all RMK models.
- The new sleeker design eliminates excess material around the throttle block, significantly reducing snow buildup.
- The coated throttle cable provides a smoother, more precise throttle response, giving riders better control in all conditions.
The first thing you’ll notice when grabbing the throttle? How smooth it feels, a small but meaningful improvement that enhances the riding experience.
Redesigned Running Boards—Better Clean-Out
Polaris updated the running boards on 9R and Boost models to enhance snow clean-out and overall rider stability
- The angled design prevents snow and ice buildup, eliminating the need to constantly clear the boards with your boots.
- The riveted construction allows for easy replacement if they get damaged.
This upgrade keeps your footing secure and minimizes distractions while riding.
Lightweight Headlight Design—Bright & Efficient
Every 2025 RMK model comes equipped with redesigned headlights that focus on weight reduction without sacrificing brightness.
- The new lights are bright and highly effective, making night riding safer and more enjoyable.
- While the color LED accents from past Matryx models are gone, the weight savings make up for it
Given the choice between style or function, I’d choose these lighter, high-performing headlights on the 2025 models every time.
Five-Way Switch on the 7S Display—More Durable, Same Functionality
Polaris introduced a more robust and durable 5-way switch for the 7S display in 2025. While it retains the same user-friendly controls as the previous version, the improved durability ensures it holds up better in extreme conditions.
Rail Caps are Back for 2025 — A Welcome Return
After a one-year absence, rail caps made their return on the 2025 RMK models. While the reason for their removal in 2024 remains unclear, riders will appreciate the added protection and durability they provide.
Sometimes, it’s the small details that make a big difference, and this is one of them.
Series 9 – 3.25″ Track—Maximum Traction & Playfulness
The Series 9 track with 3.25-inch paddles delivers outstanding deep-snow performance.
- Superior flotation—Gets the sled on top of the snow quickly.
- Exceptional traction—Hooks up aggressively for impressive propulsion.
- Playful handling — The front end feels light and responsive, making wheelies and technical maneuvers effortless.
For mountain riders seeking exceptional traction and propulsion with a lightweight feel, the Series 9 3.25″ track is the ideal choice. Without a doubt, it will be my top pick for next season.
P22 Forged Spider Clutch Cover & New Lightweight Driver
Polaris upgraded two key components on the 9R and Patriot Boost models for 2025:
- The P22 forged spider clutch cover improves durability and performance.
- A new all-steel, lightweight track driver reduces weight while still maintaining strength.
Both upgrades held up flawlessly throughout the season, providing smooth engagement and reliable performance.
Final Thoughts — A Perfect Blend of Power & Playfulness
The 2025 Polaris Patriot Boost RMK Khaos 155 is a mountain sled built for fun. By combining the great power of the Patriot Boost engine with the playful handling of the RMK Khaos chassis, Polaris has created a sled that thrives in steep terrain and deep snow—but also knows how to have fun.
After a full season of riding, I can confidently say that this sled is an absolute blast. It delivers huge power, effortless handling, and the kind of responsiveness that makes every ride an adventure.
If you’re a mountain rider looking for a sled that can both dominate technical terrain and provide endless fun, the 2025 RMK Khaos Patriot Boost 155 with the Series 9 3.25″ track should be at the top of your list.
