Merits Pioneer 9 S331 Heavy Duty 3-Wheel Mobility Scooter – 500 lb Capacity & 32 Mile Range
SKU: 62821009519

Merits Pioneer 9 S331 Heavy Duty 3-Wheel Mobility Scooter – 500 lb Capacity & 32 Mile Range

$1592.55 $1769.50
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Description

Merits Pioneer 9 S331 Heavy Duty 3-Wheel Mobility Scooter – 500 lb Capacity & 32 Mile RangeMerits Pioneer 9 S331 Bariatric Mobility Scooter Heavy Duty 3 Wheel Scooter with 500 lb Capacity & 32 Mile Range The Merits Pioneer 9 (S331) is a bariatric mobility scooter designed for riders who need higher weight capacity, extended range, and dependable everyday performance. Built with a reinforced frame, large flat free tires, and a powerful motor system, this heavy duty scooter supports both indoor maneuverability and outdoor travel with

Merits Pioneer 9 S331 Bariatric Mobility Scooter – Heavy-Duty 3-Wheel Scooter with 500 lb Capacity & 32 Mile Range

The Merits Pioneer 9 (S331) is a bariatric mobility scooter designed for riders who need higher weight capacity, extended range, and dependable everyday performance. Built with a reinforced frame, large flat-free tires, and a powerful motor system, this heavy-duty scooter supports both indoor maneuverability and outdoor travel with confidence.

At Independent Living Superstore, this model is frequently selected by customers who need bariatric-level support without giving up turning capability. Its combination of a 500 lb weight capacity and tight turning radius makes it a strong choice for everyday mobility across a range of environments.

Best For

The Pioneer 9 is ideal for users seeking a heavy-duty mobility scooter with extended range and high weight capacity. It is well suited for riders up to 500 lbs, individuals navigating both indoor and outdoor environments, and those who want a balance of strength, comfort, and maneuverability without stepping into a bulkier 4-wheel platform.

Maneuverability / Portability

The 3-wheel design provides a tighter turning radius than most full-size scooters, allowing easier navigation in indoor spaces while maintaining strong outdoor capability. With 4 inches of ground clearance and a stable front wheel configuration, it handles thresholds and uneven surfaces more confidently than many compact models. It can be disassembled for transport, though its heavier components may require assistance or a lift system.

Power / Performance

Powered by a DC 24V, 400W motor and a Dynamic Rhino2 160A controller, the Pioneer 9 delivers consistent and reliable performance. Dual 75Ah AGM batteries provide a travel range of up to 32 miles per charge under typical conditions. Range may vary depending on terrain, rider weight, and usage conditions. With a climbing capability of up to 12°, it is designed to handle moderate inclines in residential and community settings.

Comfort / Control

Comfort is enhanced with a spacious sliding captain’s seat measuring 22" wide by 20" deep and a supportive 22" backrest. The hydraulic adjustable tiller allows for ergonomic positioning, while the half-speed inhibit switch supports safer operation in tighter environments. A full lighting system improves visibility and rider confidence during low-light use.

Design / Everyday Use

Designed for full-time daily use, the Pioneer 9 features a reinforced frame, larger battery system, and durable components that support long-term reliability. Its design balances strength and maneuverability, making it suitable for both indoor navigation and outdoor travel across a variety of surfaces.

Complete Your Setup

Enhance your Pioneer 9 for maximum convenience, storage, and everyday usability with compatible accessories designed to support your heavy-duty mobility experience:

• ComfyGO Cup Holder – Keep drinks securely within reach during extended outings and daily use
• ComfyGO Premium Glow Cup Holder – Improve visibility while adding convenient beverage storage for day or evening travel
• ComfyGO Universal Phone Holder – Keep your phone accessible for navigation, communication, and hands-free convenience
• Multipurpose Storage Bag – Add practical storage for personal items, shopping bags, and travel essentials
• ComfyGO Cane Holder – Securely carry a cane or walking aid for added independence throughout your day

Specifications

Model S331
Product Type Bariatric 3-Wheel Mobility Scooter
Weight Capacity 500 lbs
Top Speed 6 mph
Travel Range Up to 32 miles per charge
Turning Radius 50"
Ground Clearance 4"
Overall Length 54"
Overall Width 27"
Overall Height 47"
Product Weight 249 lbs
Heaviest Piece 101 lbs
Seat Width 22"
Seat Depth 20"
Backrest Height 22"
Motor DC 24V, 400W
Controller Dynamic Rhino2 160A
Battery Type AGM
Battery Specs (2) 75Ah M24 AGM
Charger 6A Off-board
Climbing Gradient 12°
Front Wheel 10" flat-free
Drive Wheels 12.5" flat-free
Suspension Yes
Control Type Hydraulic adjustable tiller
Lighting Headlight, tail lights, turn signals, hazard lights
HCPCS Code K0808
Color Red
Airline Approval No
Use Environment Indoor / Outdoor full-time use
What’s Included Scooter, batteries, charger, basket, seat, standard components

Enhance Your Scooter Setup

Improve convenience and everyday usability with compatible add-ons such as storage, protection, and accessories. Browse our Mobility Scooter Accessories.

Not sure which scooter is right for you?

If you are comparing weight capacity, range, and maneuverability, understanding how each platform fits your daily needs can help guide your decision. Review our Mobility Scooter Buying Guide.

Warranty

Frame & seatbelt: 5 years
Major components (motor, controller, electronics): 18 months
Structural & mechanical components: 13 months
Select parts & batteries: 6 months

Shipping & Delivery

This full-size scooter typically ships via freight carrier depending on destination and availability. Tracking details are provided once the order has been processed.

Important Note

This is a full-size bariatric scooter designed for strength and extended range. Due to its size and weight, transport may require a compatible lift or carrier.

Direct-to-Consumer Disclaimer

Independent Living Superstore operates as a direct-to-consumer retailer and does not bill Medicare, Medicaid, or private insurance.

Why Buy From Independent Living Superstore

Independent Living Superstore is a veteran-owned, family-run business focused on dependable mobility solutions, clear guidance, and responsive customer support.

Contact Us

Email: [email protected]
Phone: (844) 795-2930

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Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 62821009519

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4.2 ★★★★★
Based on 1924 reviews
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Product Reviews
L
Verified Purchase
Luke
Port Orchard, US
★★★★★ 5
Very comfortable
Color: Grey
I’m not sure if I am just transitioning from a very uncomfortable office chair, but this one is extremely comfortable. Very good dynamic lumbar support that reminds you that it’s there. Only cons would be a low back (I am 6’5”) but I’m not laying my head back anyways. Also the seat length is a touch short for me but standard size really. Great bang for buck with an open box deal. Easy to assemble. TBD on durability.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 10, 2026
A
Verified Purchase
Angela Higbee
Louisville, US
★★★★★ 5
BUY this chair!!!!!
Color: Cream
After using this chair for about a month, I can confidently say that it's one of the most comfortable office chairs I've sat in for an extended period of time. Being in school and studying 8+ hours a day at my desk would normally make my back hurt in any other chair. Fortunately, after using this chair all day I have very very minimal back pain, if any at all (definitely due to previous injuries). The cushion on the back of the chair is extremely supportive and comfortable over all. Cannot say enough good things about this chair!!!! Definitely worth the price and easy to put together.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
M
Verified Purchase
Mika
Chelsea, US
★★★★★ 4
Good quality
Color: Grey
It was easy to put together. Material feels durable. Only downside is that it doesn't tilt lock and the arm rest height isn't adjustable (though it can be folded up). I'm 4'11" and the back is the perfect height for me with great neck and lumbar support. My feet kinda dangle but I use a foot rest so it's not a big deal. My boyfriend who's 5'10" says it's comfy but the back could be taller.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 27, 2025
K
Verified Purchase
KD
Cuba, US
★★★★★ 5
Perfect chair!
Color: Cream
I love this chair! Was hesitant to buy due to the price being a bit more than I wanted to spend, but I work from home and have terrible posture from sitting at my desk all day, so I needed something that would be conducive to helping me sit up properly. I put the chair together myself, it was heavy but overall pretty easy to do. The tools provided worked great and the directions were clear. Aesthetically, it’s a lovely neutral color and everyone who has seen it so far has complimented me and on how nice it is and how comfortable it looks — Indeed it’s a very expensive looking chair. The first time I sat on it I wasn’t sure if I was going to like it….maybe something about the lumbar support seeming to protrude too much? At any rate, I gave it a couple of days and I absolutely LOVE it. I can already feel my posture improving, no backaches and I’m perfectly comfortable all day long. I’ve had it for a couple weeks now and couldn’t be happier. It seems to be very well made, so I’m confident it will last a very long time and be worth the price. I HIGHLY recommend this chair!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 13, 2025
E
Verified Purchase
Elle Cook
Lowell, US
★★★★★ 1
UPDATE: DEFECTIVE… it was a Great chair... a bit short for tall people!
Color: Cream, Color: Cream
I purchased this chair four years ago and really liked it. However, when it was damaged during a move, I attempted to replace it. Unfortunately, the replacement chair had a construction issue that had been repeatedly mentioned in numerous comments spanning over a year at least. This defect prevents the chair from being completely assembled, rendering it unusable (screw holes don’t line up). Amazon has failed to address this issue by removing these defective chairs from its inventory. You won’t be aware of this problem until you’ve almost completed assembling the chair. At that point, you’ll have to disassemble it, rebox it, and return the box to UPS. This is an incredibly inconvenient process, and Amazon must take immediate action to rectify this issue before anyone considers purchasing this chair again. Old review from 2023: Based on someone else's review, it would seem that this chair is perfect for average-height people but less great for those of us who are a bit tall or (according to her) a bit short. I'm 5'9 with most of my height in my legs. I like a chair to be tall enough that my legs can be straight to the floor from my knees to my feet and still have support under my knees. This chair is too short for that, even at it's highest setting, but it can be fixed with a simple replacement of the gas lift cylinder for a mere $20 (search for gas lift cylinder on Amazon). And the extra $20 is worth it because other than that one issue, this chair is great. My first experience with this chair was at work when the firm replaced all of our desk chairs. I loved it so much that I bought it for myself when I went into private practice. The lumbar support hits in just the right spot and moves with your body as you lean in and out. I love the cream color, and the seat is padded nicely. I especially love the liftable arms. I sit at my desk for 8+ hours straight 5-6 days a week, and I never have body pain-- Granted, I am only 36, but I have definitely experienced this with other office chairs that claimed to be "ergonomic". With a simple lift cylinder replacement and a movable standing desk (which I never actually stand at), I can finally sit at my desk without my knees hitting the underside of the desk or my legs having to be extended out to have support under my knees. These two things mean that I don't slump at my desk anymore, and my neck and back thank me! :)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2023

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