Mercury – Quicksilver 835257K6 Flo-Torq II Propeller Hub Kit | High-Performance Mercury & Mariner Outboards & MerCruiser Sterndrives | 835257K6

Overview

For serious performance boaters running big power and surface-piercing props, the Quicksilver 835257K6 Flo-Torq II Hub Kit delivers the strength and protection you need. Designed for high-performance Mercury and Mariner outboards and MerCruiser Alpha One and Bravo One sterndrives, it’s built to handle aggressive prop setups like the Fury, Tempest Plus, Trophy Plus, Revolution 4, and Bravo I.

The system uses a shock-absorbing sleeve that cushions your drivetrain from prop strikes and high-torque loads while maintaining precise power transfer. It’s rugged, proven, and easy to service — the same hub system trusted by Mercury Racing.

Key Features

• Purpose: Designed for surface-piercing, high-performance setups to protect the drivetrain from impact and torque shock.
• Material: Built from high-strength Delrin and hardened metal components for maximum durability in high-load conditions.
• Performance: Maintains solid torque transfer while damping vibration and impact for smoother, quieter running.
• Design: Compatible with Fury, Tempest Plus, Trophy Plus, Revolution 4, and Bravo I props on select Mercury & MerCruiser drives.
• Ease of Use / Install: Kit includes thrust washer, drive sleeve, bushing, splined adapter, tab washer, and prop nut — installs easily with standard tools.

Engine & Boat Compatibility

• High-performance Mercury and Mariner outboards
• MerCruiser Alpha One and Bravo One sterndrives (under 400HP)
• Works with surface-piercing propellers (Fury, Tempest Plus, Trophy Plus, Revolution 4, Bravo I)
• Ideal for performance boats, bass boats, and racing setups

Performance & Real-World Benefits

The 835257K6 Flo-Torq II kit helps your prop spin smoothly under intense load while shielding your drivetrain from damage during impact. When running at high speed, it’s designed to absorb prop shock without sacrificing acceleration or top-end performance.

If you strike debris or push your setup hard, the replaceable hub sleeve takes the hit — not your prop shaft or gears. It’s an easy, cost-effective way to keep your performance setup fast, safe, and reliable.

Why Choose OEM

Mercury’s Flo-Torq system is built for racing and performance use, engineered with exact tolerances for precision torque transfer. Aftermarket hubs can slip or fail under heavy load, risking drivetrain damage.

A genuine Quicksilver hub kit ensures a perfect fit, factory-tested reliability, and proven protection — the same system used by professional race teams running Mercury power.

FAQ

Q1: What engines and drives fit this hub kit?
A: It fits high-performance Mercury and Mariner outboards and MerCruiser Alpha/Bravo One sterndrives using specific surface-piercing propellers.

Q2: What’s included in the kit?
A: Thrust washer, drive sleeve, bushing, splined adapter, tab washer, and prop nut.

Q3: Which propellers does it work with?
A: Fury, Tempest Plus, Trophy Plus, Revolution 4, and Bravo I props.

Q4: Is it field-serviceable?
A: Yes. The modular hub design allows quick on-the-water replacement without special tools.

Q5: Why OEM instead of aftermarket?
A: OEM hubs are tested under racing-level stress for strength and balance — aftermarket copies can’t match that.