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Pec Fly Machine MF-PF100

Chest Press Machines Shoulder Machines

$2,799 – $3,699

The MF-PF100 Pec Fly / Rear Delt Machine is a dual-function upper body isolation station. Seamless transition between pec fly (chest) and rear delt fly (posterior shoulder) modes with a simple handle flip. 200 lb selectorized weight stack with diverging/converging arm paths optimized for each exercise. 5-position adjustable seat height. Range-of-motion selectors for both exercises — ideal for rehabilitation protocols. Pre-stretch positioning for full pectoral activation in fly mode. Counterbalanced arms for light starting resistance.

⚖ Capacity 200

▦ Dimensions 54"L × 48"W × 56"H

⚎ Machine Weight 385

☹ Max User 350 lbs (159 kg)

Best For: Commercial Gym Rehabilitation

Load Type: Selectorized (Pin Loaded)

Certifications: CE, ISO 20957 Class S

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Key Features

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Independent Converging Arms

Each side moves independently through a biomechanical arc — like dumbbell presses with machine stability

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Dual Independent Stacks

Train unilaterally to fix muscle imbalances or bilaterally for maximum chest activation

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Gas-Assisted Adjustments

Quick-release seat and back pad with numbered positions

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Adjustable ROM Limiter

Customize range of motion for rehabilitation or targeted training

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Multi-Grip Handles

Standard, wide, and neutral grip options to shift emphasis across chest fibers

Technical Specifications

Construction & Materials

Frame Material	11-gauge steel, sealed bearings, counterbalanced arms
Steel Gauge / Wall Thickness	11-gauge (3.0mm) structural steel
Footprint (L x W x H)	54"L × 48"W × 56"H
Machine Weight	385

Performance & Capacity

Load Capacity	200
Max User Weight	350 lbs (159 kg)

Detailed Specifications

Weight Stack	200 lb selectorized
Modes	Pec fly + rear delt
Switch	Handle flip
Seat	5-position
ROM	Adjustable dual range
Starting Resistance	5 lb
Color	Black/Gray
Press Arms	Independent converging (biomechanical arc)
Adjustability	Gas-assisted seat, 8-position back pad
Grip Positions	Multi-grip handles (standard, wide, neutral)
Starting Weight	Counterbalanced for low starting resistance
Range of Motion	Adjustable ROM limiting system
Upholstery	High-density foam, marine-grade vinyl
Finish	Electrostatic powder coat

Warranty & Support

Warranty	Lifetime frame, 5 years stack, 2 years upholstery
Shipping & Delivery	Freight delivery; 2–4 weeks lead time.

Frequently Asked Questions

How do you switch between exercises?

Simply flip the handles — no tools required. The pivot point automatically repositions for the correct biomechanics.

What is the difference between cable flys and pec deck?

The pec deck provides a fixed, guided path that isolates pecs with less stabilizer involvement. Cable flys require more core/shoulder stabilization.

Can you use this for shoulder rehab?

Yes — the rear delt fly mode with light starting resistance and adjustable ROM limiters makes it excellent for rotator cuff and postural rehab.

Converging or linear chest press — which is better?

Converging arm presses better replicate natural human movement. The arms arc inward at the top, matching the path dumbbells take for superior pectoral activation and shoulder comfort.

Seated chest press vs incline chest press?

Seated (flat) targets overall chest. Incline shifts emphasis to upper chest and anterior deltoids. Most commercial gyms include both for complete chest development.