BPX Gasoline-Powered Flex-Shaft Drive Motor

Never has consolidating concrete been more comfortable with Multiquip's BPX concrete backpack vibrator. Designed to meet operator expectations for maximum productivity with optimal contact points over the user's center of gravity and materials offering maximum breathability, the BPX is the ideal option in remote locations or where electricity is not accessible.

• Breathable padding configuration and adjustable compression straps cover critical comfort points on the user's back.
• Upper-back load adjuster straps allows to proper slack setting to alleviate shoulder stress.
• Lower lumbar pad with high-friction fabric reduces pressure point slippage
• Throttle control and on/off engine switch easily accessible on shoulder straps.
• Storage pouch on each waist strap allow the user to safely stow smart phones and other small personal items.
• Reliable Honda 2.1hp GXH50 4-stroke engine with low oil shut down sensor.
• Swivel mounted engine for better operator flexibility and maneuverability.
• Compatible with MQ's full line of pencil and standard shafts and heads for enhanced application versatility.

The BPX Gasoline-Powered Flex-Shaft Drive Motor is an innovative solution for contractors demanding powerful, portable, and ergonomic concrete vibration in challenging jobsite environments. Designed by Multiquip, the BPX is renowned for its Honda engine reliability, backpack comfort, and jobsite flexibility—making it a top choice for slab pours, remote footings, deep forms, and projects with difficult access or limited electricity.

BPX Gasoline-Powered Flex-Shaft Drive Motor: Full Product Overview

The Multiquip BPX backpack system combines a robust 2.1 HP Honda GXH50 four-stroke gasoline engine with a smartly designed lightweight backpack harness. This configuration delivers flexible, all-day vibration power with unmatched maneuverability—allowing users to walk, climb scaffolding, or work across expansive sites without trailing electrical cords or lugging heavy machinery.

Key Features and Performance Advantages

• Honda GXH50 Engine (2.1 HP, 4-stroke): Delivers quiet, fuel-efficient, and consistent power—even under tough demands—while a low oil shutdown sensor protects against accidental damage.

• Backpack Ergonomics: Padded shoulder and waist straps balance weight for the operator, lowering fatigue and boosting productivity for long pours and remote projects.

• Swivel-Mount Engine: Lets the motor pivot with operator movement—minimizing shaft binding, allowing for full range of motion, and supporting safe use in enclosed or congested jobsite corners.

• Simple Throttle & On/Off Controls: Strategically mounted on shoulder straps, throttle and engine controls are always within easy reach for quick response to jobsite needs.

• Storage Pouches: Convenient built-in pouches on the harness allow users to secure personal items, radios, or jobsite tools during operation.

• Flex-Shaft and Head Compatibility: Accepts most FS-series flexible shafts and steel heads (1-3/8”–2-1/8” diameter), enabling precise vibration for slabs, walls, columns, and custom forms.

• Work Anywhere, Anytime: No electrical cords means superior flexibility for bridge decks, highway repairs, tunnels, or areas far from generator power.

Technical Specifications

Ergonomics and Operator Comfort

Unlike typical frame-mounted gas drive motors, the BPX’s innovative backpack design distributes weight across the back and shoulders, allowing for superior balance and mobility. This reduces shoulder, arm, and back fatigue—letting operators vibrate footings, forms, and slabs over larger areas and at greater heights without repositioning heavy equipment.

Built-in vibration isolation and non-slip padding keep the BPX secure and comfortable, even on long jobs or when climbing scaffolds. The harness’s accessible controls and storage mean operators remain fully in control and organized throughout each pour.

Jobsite Productivity and Flexibility

With the BPX, crews no longer waste time moving heavy engine units across jobsite lines or plugging/unplugging extension cords. The operator simply walks to the next task, swaps shafts in seconds with the quick-disconnect feature, and resumes vibration immediately. This productivity boost is especially important for projects with long wall forms, elevated decks, or isolated slab sections.

The 2.1 HP engine ensures reliable consolidation for most commercial and residential jobs, easily supporting shaft lengths up to 21 feet and vibration heads up to 2-1/8”.

Durability and Maintenance

• Honda Engine Quality: GXH50 engines are celebrated for long life, easy starts, efficient fuel use, and broad part availability.

• Low Oil Shutdown Sensor: Automatic shutdown preserves engine life and prevents costly repairs caused by accidental oil loss, offering an important safety margin for busy operators.

• Quick Service Access: Routine checks (fuel, oil, air, spark) can be completed in minutes, keeping field downtime to a minimum.

Jobsite Applications

• Remote or generator-free slab pours

• Large-deck vibration with uninterrupted movement

• Footings, tall wall forms, and vertical columns

• Commercial and industrial slab-on-grade

• Tunnel sections, bridge decks, and heavy infrastructure

Comparison: BPX vs. Other Concrete Vibrator Drive Motors

Why Contractors Choose the BPX

The BPX Gasoline-Powered Flex-Shaft Drive Motor from Multiquip offers the ultimate in field flexibility, comfort, and productive vibration power. Its lightweight backpack design, trusted Honda engine, and "move-with-you" usability empower concrete professionals to pour, form, and finish anywhere—no cords, no waiting, and less fatigue. From remote highway slabs to tricky commercial jobs, the BPX is the ergonomic, efficient, and reliable tool that keeps modern crews moving.