Made to order
Selectorized Machines
Back Extension PPF-K631
Price on request
A selectorized seated back extension that strengthens the lower back and glutes with a guided, controlled movement.
Made to order — lead time confirmed with your order
Version: Gunmetal frame · burgundy upholstery
- Tracked Freight Delivery
- Expert Installation Services
- Lifetime Frame Warranty
SKU: PPF-K631
Compare the Selectorized Machines range
| Model | Back Extension PPF-K631This model | Seated Chest Press PPF-K608 | Seated Leg Press PPF-K803 | Lat Pulldown / Seated Row Combo PPF-K110 | Selectorized Wrist Curl Machine PPF-HM124 |
|---|---|---|---|---|---|
| Price | On request | On request | On request | On request | On request |
| Model | PPF-K631 / PPF-K831 | PPF-K608 / PPF-K808 | PPF-K803 | PPF-K110 / PPF-K110B | PPF-HM124 |
| Series | Series K6 | Series K6 | Series K8 | Series K1 | Series HM |
| Machine type | Selectorized (weight stack) | Selectorized (weight stack) | Selectorized (weight stack) | Selectorized (weight stack) | Selectorized (weight stack) |
| Target muscles | Back, Glutes | Chest, Shoulders, Triceps | Quadriceps, Glutes, Hamstrings | Back, Biceps | Forearms |
| Weight stack | 80 kg (176 lb) | 80 kg (176 lb) | 100 kg (220 lb) | 100 kg (220 lb) | — |
| Net weight | 190 kg (419 lb) | 220 kg (485 lb) | 255 kg (562 lb) | 210 kg (463 lb) | 81 kg (179 lb) |
| Shipping weight | 220 kg (485 lb) | 250 kg (551 lb) | 295 kg (650 lb) | 245 kg (540 lb) | 101 kg (223 lb) |
| Assembled size (L × W × H) | 1,600 × 1,190 × 1,625 mm (63 × 46.9 × 64 in) | 1,210 × 1,360 × 1,625 mm (47.6 × 53.5 × 64 in) | 1,950 × 1,200 × 1,625 mm (76.8 × 47.2 × 64 in) | 1,800 × 700 × 2,330 mm (70.9 × 27.6 × 91.7 in) | 540 × 600 × 1,060 mm (21.3 × 23.6 × 41.7 in) |
| Finish | Gunmetal grey frame, black shroud with silver trim, burgundy upholstery | Gunmetal grey frame, black shroud with silver trim, burgundy upholstery | Matte black frame, black and silver-grey shroud, black upholstery | All-black frame, black upholstery | Black frame, black upholstery |
| Price | On request (quote) | On request (quote) | On request (quote) | On request (quote) | On request (quote) |
| Weight | 419 lb (190 kg) |
|---|---|
| Width | 46.9 in (119 cm) |
| Height | 64 in (163 cm) |
| Depth | 63 in (160 cm) |
| Model | PPF-K631 / PPF-K831 |
| Series | Series K6 |
| Machine type | Selectorized (weight stack) |
| Target muscles | Back, Glutes |
| Weight stack | 80 kg (176 lb) |
| Net weight | 190 kg (419 lb) |
| Shipping weight | 220 kg (485 lb) |
| Assembled size (L × W × H) | 1,600 × 1,190 × 1,625 mm (63 × 46.9 × 64 in) |
| Net weight — Matte black · black upholstery | 170 kg (375 lb) |
| Finish | Gunmetal grey frame, black shroud with silver trim, burgundy upholstery |
| Price | On request (quote) |
The PPF-K631 trains the lower back in a seated position: with the hips set against the pad and the feet on the footrest, users push the back roller rearward. It strengthens the spinal erectors and glutes with light, adjustable loads, which suits every level.
Design & features
- 80 kg selectorized weight stack with full protective shroud
- Back roller pad on a pivoting arm
- Seat with hip pad
- Side hand grips for stability
- Footrest
- Two finishes: gunmetal frame with burgundy upholstery, or matte black with black upholstery and a side accessory holder
Ideal for
Commercial gyms, hotel fitness rooms, university recreation centers and training studios. The pin-selected stack makes load changes quick and simple for members of every level, from beginners to experienced lifters.
Contact Prime Power Fitness to request a quote, or plan your complete strength floor with our team through a floor-plan consultation.
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