Quantum 4Front Powerchair

The 4Front® is a quiet, more responsive front-wheel drive power chair that features automotive-grade suspension with unprecedented comfort and ride quality. The 4Front®’s CASE (Caster Angle Sensor Encoder) technology and SRS (Smooth Ride Suspension) provide stability for smooth obstacle transitions and unmatched driving performance. The 4Front® features standard speeds of up to 9.6km/h in the lowered position, and speeds up to 5km/h while elevated at 10″ with our optional safe seat elevation. Standard LED fender lights allow you to see and be seen.

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Story of the 4Front®

Through research, we found that consumers wanted a front-wheel drive chair with suspension that addresses real-world needs. The industry did not want another me-too product; they wanted suspension that addressed ride quality, performance, and safety. We looked at top suspension systems in other industries, especially automotive, and spent two years evolving what is now SRS (Smooth Ride Suspension) on the 4Front®.

The result is a power chair suspension that uses automotive-grade components and engineering to create performance and stability, with optimised user ride comfort. SRS is made up of four coil-over, gas-charged shocks that provide an ultra-smooth and quiet ride. The geometry in which the shocks are integrated into the power base allows independent wheel and caster travel, with the additional effect of stabilisation delivering optional safe seat elevation up to 10″ at 5km/h.

With the 4Front® providing unmatched performance over multiple terrains, Q-Logic 3 offers an advanced safety traction mechanism that will sense any reduction in traction. If the chair senses a reduction in traction, it will automatically revert to a 2km/h driving inhibit to ensure safe driving. The normal drive speeds resume once the user brings the chair to a stop and the joystick is centred.

  • CASE (Caster Angle Sensor Encoder) technology
  • Unmatched driving performance and ride quality
  • Advanced stability for smooth obstacle transitions
  • Superior, automotive-grade SRS (Smooth Ride Suspension)
  • Q-Logic 3 EX Advanced Drive Controls
  • LED front and rear fender lights
  • Quiet ride technology
  • 20 colour options
  • Available with WC19 crash-test approved, occupied transit option with all configurations

Therapists from around the country test drove the 4Front® at our annual design forums. The overwhelming response was that it drives much smoother than other front-wheel drive power chairs in the industry.

We offer a full assessment service as well as a free trial.
Please complete our online enquiry form and request an assessment.
Together we can tailor a solution that fits your unique needs and abilities.

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Model 4Front®
Drive Configuration Front-wheel drive
Drive Wheels 14″ flat free
Optional: 14″ Pneumatic, 14″ Knobby
Caster Wheels Rear: 9″ flat free
Anti-Tip Wheels Front: 4″
Maximum Speed4 Up to 9.6km/h
Ground Clearance 3″ (motor pivot)
Turning Radius5 24.5″
Overall Length11 40″
Base Width 24″
Seating Sizes TRU-Balance® 3
Synergy®/Static: W: 12-22″ D: 12-22″
Power Tilt: W: 12-22″ D: 12-22″
Lift & Tilt: W: 12-22″ D: 12-22″
Seat-to-Floor Heights16,17 TRU-Balance® 3
Synergy®/Static8: 15.25-17.25″
Power Tilt8: 17.5-19.5″
Lift & Tilt8: 17.75-19.75″
Manual Recline10 Yes
Battery Size6 Group 24 or Group 34
Battery Weight14 Group 24: 23kg
Group 34: 17kg
Available Electronics12 120A Q-Logic 3 EX
Battery Charger 8A Off-board
Motor Packages Two-pole, front-wheel drive
Weight Capacity7 136kg
Base Weight 63.5kg
4 Speed varies with user weight, terrain type, battery charge, battery condition and tire pressure.
5 Without front riggings
6 Battery capacity may change when adding power positioning systems.
7 Weight capacity is dictated by the selection of seating.
8 All measurements +/- 1/8″ with 18″ x 18″ seat, fixed towers, 300 lbs. weight capacity and solid tires (add 3/8″ with pneumatic tires). Depths may increase seat-to-floor height. Contact Customer Service for details. Limited measurements are in the lowest position; does not include elevating system unless specified.
11 Without front riggings
12 All Quantum Rehab® units can be ordered with specialty controls
14 Battery weight may vary +/- 3 lbs. based on manufacturer.
16 Seat-to-floor heights are measured with the unit unloaded. Due to the 4Front®’s suspension system, seat-to-floor heights are approximately 0.25” lower when the unit is loaded. 17 16.5″ seat-to-floor height is not available with power tilt or iLevel®. 19.5″ seat-to-floor height is not available with static seat or power recline.

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Product Enquiry

We offer a full assessment service as well as a free trial. Please complete our online enquiry form and request an assessment. Together we can tailor a solution that fits your unique needs and abilities.