2026 Polaris ProStar S4 INDY Adventure 137 ES
2026 Polaris ProStar S4 INDY Adventure 137 ES

Specs

General Information

Manufacturer
Polaris
Polaris
Model Year
2026
2026
Model
ProStar S4 INDY Adventure 137 ES
ProStar S4 INDY Adventure 137 ES
Model Code
S26TDE9FS
S26TDE9FS
Color
Gloss Black / Blue Dusk
Gloss Black / Blue Dusk

Dimensions

Length
Overall - 120 in. (305 cm)
Overall - 120 in. (305 cm)
Height
Overall - 46 in. (116.8 cm)
Overall - 46 in. (116.8 cm)
Width
Overall - 47 in. (119.4 cm)
Overall - 47 in. (119.4 cm)
Weight
Estimated dry - 636 lb. (288 kg)
Estimated dry - 636 lb. (288 kg)

Engine & Drivetrain

Engine
ProStar S4
ProStar S4
Cylinders
2
2
Cooling
Liquid
Liquid
Displacement
998 cc
998 cc
Bore x Stroke
3.7 x 2.9 in. (93 x 73.5 mm)
3.7 x 2.9 in. (93 x 73.5 mm)
Fuel System
Sequential Port Injection
Sequential Port Injection
Starting
Electric
Electric
Ignition
Coil on Plug
Coil on Plug
Drive System
Type - F-N-R Transmission
Type - F-N-R Transmission
Drive Clutch
P22
P22
Driven Clutch
TEAM BOSS
TEAM BOSS
Reverse
F-N-R Transmission
F-N-R Transmission
Exhaust
Single
Single
Brakes
Disc - S4 Stealth
Disc - S4 Stealth
Fuel Capacity
11.5 gal. (43.5 l)
11.5 gal. (43.5 l)

Operational

Handlebar

One piece hooked

Riser type - 2.36 in. (60 mm) fixed

One piece hooked

Riser type - 2.36 in. (60 mm) fixed

Instrumentation

Fuel gauge - Electronic

Speedometer, Tachometer, Temp / Low Oil Light - 7S Display

Fuel gauge - Electronic

Speedometer, Tachometer, Temp / Low Oil Light - 7S Display

Seating or Rider capacity

MATRYX Performance - 2 person

Passenger Seat

MATRYX Performance - 2 person

Passenger Seat

Skis
PRO-STEER DUAL CARBIDE
PRO-STEER DUAL CARBIDE
Ski Stance
42.5 in. (108 cm)
42.5 in. (108 cm)
Track Type
Cobra
Cobra
Track LxWxH
137 x 15 x 1.35 in.
137 x 15 x 1.35 in.

Other

Additional Colors

Hemlock Blue / Black / Velocity Blue

Gloss Black / Blue Dusk

Hemlock Blue / Black / Velocity Blue

Gloss Black / Blue Dusk

Includes

12V Outlet / RCA

Hand and thumb warmers - Smart warmers

Heated passenger grips

Mirrors

Storage

Windshield - MATRYX tall smoke

12V Outlet / RCA

Hand and thumb warmers - Smart warmers

Heated passenger grips

Mirrors

Storage

Windshield - MATRYX tall smoke

Suspension

Shocks
Front / Front track / Rear track - Polaris TS
Front / Front track / Rear track - Polaris TS
Front Suspension

MATRYX

Travel - 9.5 in. (24.1 cm)

MATRYX

Travel - 9.5 in. (24.1 cm)

Rear Suspension

PRO-CC™

Travel - 16.2 in. (41.1 cm)

PRO-CC™

Travel - 16.2 in. (41.1 cm)

Features

2-Up Trail Performance

  • RIDER FIRST DESIGN. EFFORTLESS CONTROL.: The INDY on the Matryx platform is a trail rider's dream. The narrow cockpit provides improved rider connection to the sled to help you move around the sled for trail precision.
  • CARVE THE CORNERS.: The PRO-CC is a purpose-built coupled rear suspension design, providing the industry's best acceleration, handling, and consistently smooth ride. The coupled design controls pitch through geometry without reducing the fun factor, with a front torque arm calibrated for trail compliance and reduced bottoming.
  • ENGINE CHOICES FOR YOUR RIDING STYLE.: Choose from the smooth, powerful, and efficient 650 Patriot or the long range and easy service intervals of the ProStar S4 4-stroke engine.
  • Cruise the trail alone or with a passenger. When the snow starts to fly and the winter playground opens up, INDY Adventure provides the comfort and control to navigate the trail system.

Industry-Leading Technology

  • PLAN YOUR RIDE. TRACK THE FUN.: Plan, track, and share your ride by adding the optional 7S Display powered by RIDE COMMAND. The 7" glove-touch display is purpose-built for snowmobiles, with on-board diagnostics, GPS navigation with over 380,000 miles of offline trail data, and sled-to-sled Group Ride technology to see your ride group with or without cell coverage.
  • WARM HANDS. BETTER RIDES.: The Polaris-exclusive SmartWarmers build heat quickly and maintain your customized temperature regardless of the temperature outside. Enhance your ride further by setting individual thumb and hand temperatures for an even more customized level of comfort.
  • ALL DAY COMFORT.: The Lock & Ride Flex M2 Heated Seat is a quick and easy way to add passenger seating in one simple step. Go from solo to 2-up riding in seconds. Plus, heated passenger grips provides passengers with additional comfort on colder days.
  • Polaris sleds lead the way in technology that enhances your ride. Technology built to help you plan rides, track your group, keep your hands warm on the ride and see your way from dusk til dawn.

Spirited Trail Handling

  • SHARE THE RIDE. OR DON'T.: The standard Lock & Ride Flex M2 passenger seat is easy on, easy off.
  • FACTORY-BUILT FOR ADVENTURE: Standard Tunnel Bag, Mirrors and Sentry Front Bumper.
  • CHOOSE YOUR POWER.: Choose from 650 or ProStar S4.
  • EFFORTLESS CONTROL: The Matryx platform INDY features a rider-first design and over 4 decades of suspension development to create the best handling trail performance sled on snow.
  • TAILOR YOUR RIDE WITH A QUICK SWITCH.: High-performance, adjustable, and rebuildable FOX® QS3 shocks offer easy adjustability and deliver outstanding performance on-trail on 650 Patriot INDY Adventure models. The ProStar S4 equipped INDY Adventure features Polaris TS shocks with easy adjustments for your riding style.
  • PREDICTABLE STEERING. CONFIDENCE INSPIRING.: Developed on the track, proven on the trail. The Polaris IFS is the perfect balance of effort, precision & zero-bump steer-stability to deliver 2-up handling and control.
  • OPTIONAL PROSTAR S4 4-STROKE ENGINE.: The ProStar S4 provides easy runability with the spirited performance only a Polaris can deliver. The engine is designed for easy ownership and long service intervals to keep you on the trails longer.
  • When we build a sled, we build it to be the best sled for every riding style. Not simply a different sticker or name. Every part on the INDY Adventure is scrutinized to deliver spirited control and handling on the trails.

2-Up Trail Performance

  • RIDER FIRST DESIGN. EFFORTLESS CONTROL.: The INDY on the Matryx platform is a trail rider's dream. The narrow cockpit provides improved rider connection to the sled to help you move around the sled for trail precision.
  • CARVE THE CORNERS.: The PRO-CC is a purpose-built coupled rear suspension design, providing the industry's best acceleration, handling, and consistently smooth ride. The coupled design controls pitch through geometry without reducing the fun factor, with a front torque arm calibrated for trail compliance and reduced bottoming.
  • ENGINE CHOICES FOR YOUR RIDING STYLE.: Choose from the smooth, powerful, and efficient 650 Patriot or the long range and easy service intervals of the ProStar S4 4-stroke engine.
  • Cruise the trail alone or with a passenger. When the snow starts to fly and the winter playground opens up, INDY Adventure provides the comfort and control to navigate the trail system.

Industry-Leading Technology

  • PLAN YOUR RIDE. TRACK THE FUN.: Plan, track, and share your ride by adding the optional 7S Display powered by RIDE COMMAND. The 7" glove-touch display is purpose-built for snowmobiles, with on-board diagnostics, GPS navigation with over 380,000 miles of offline trail data, and sled-to-sled Group Ride technology to see your ride group with or without cell coverage.
  • WARM HANDS. BETTER RIDES.: The Polaris-exclusive SmartWarmers build heat quickly and maintain your customized temperature regardless of the temperature outside. Enhance your ride further by setting individual thumb and hand temperatures for an even more customized level of comfort.
  • ALL DAY COMFORT.: The Lock & Ride Flex M2 Heated Seat is a quick and easy way to add passenger seating in one simple step. Go from solo to 2-up riding in seconds. Plus, heated passenger grips provides passengers with additional comfort on colder days.
  • Polaris sleds lead the way in technology that enhances your ride. Technology built to help you plan rides, track your group, keep your hands warm on the ride and see your way from dusk til dawn.

Spirited Trail Handling

  • SHARE THE RIDE. OR DON'T.: The standard Lock & Ride Flex M2 passenger seat is easy on, easy off.
  • FACTORY-BUILT FOR ADVENTURE: Standard Tunnel Bag, Mirrors and Sentry Front Bumper.
  • CHOOSE YOUR POWER.: Choose from 650 or ProStar S4.
  • EFFORTLESS CONTROL: The Matryx platform INDY features a rider-first design and over 4 decades of suspension development to create the best handling trail performance sled on snow.
  • TAILOR YOUR RIDE WITH A QUICK SWITCH.: High-performance, adjustable, and rebuildable FOX® QS3 shocks offer easy adjustability and deliver outstanding performance on-trail on 650 Patriot INDY Adventure models. The ProStar S4 equipped INDY Adventure features Polaris TS shocks with easy adjustments for your riding style.
  • PREDICTABLE STEERING. CONFIDENCE INSPIRING.: Developed on the track, proven on the trail. The Polaris IFS is the perfect balance of effort, precision & zero-bump steer-stability to deliver 2-up handling and control.
  • OPTIONAL PROSTAR S4 4-STROKE ENGINE.: The ProStar S4 provides easy runability with the spirited performance only a Polaris can deliver. The engine is designed for easy ownership and long service intervals to keep you on the trails longer.
  • When we build a sled, we build it to be the best sled for every riding style. Not simply a different sticker or name. Every part on the INDY Adventure is scrutinized to deliver spirited control and handling on the trails.