Mavnai Trim Cylinder Trailering Clips 2-Pack Red-Orange — Composite clamps for Alpha/Bravo/Blackhawk, protects hydraulic rams for

Mavnai stern drive trim cylinder trailering clips are a two-piece clamp set that secures your trim cylinder rams during towing to protect the hydraulic system and support the outdrive.

If you tow your boat on a trailer, the weight and motion of the stern drive can place stress on trim cylinders and hydraulic fittings. These Mavnai trailering clips, made from high-grade composite plastic and finished in a bright red-orange, clamp over the trim cylinder rams to hold the drive in a safe, supported position. They’re designed to be compatible with a wide range of sterndrives — including Alpha, Bravo, Blackhawk, OMC Cobra and select Volvo-Penta models — and come in a two-pack so both sides are protected while trailering.

Will these clips fit my drive and cylinder size?

The Mavnai clips are molded to match common trim cylinder diameters used across many sterndrive systems. Compatibility varies by model and cylinder length, so verify the sizing against your make and model before ordering.

• Compatible with Quicksilver 817019A2 reference and similar designs.
• Fits Alpha I, Bravo I & II (without trim cylinder anode) without cutting.
• Listed lengths: CYL #45706A13 = 9-7/8" (250mm), Alpha I Gen. II = 10-1/4" (260mm), others noted.
• Works with Blackhawk, OMC Cobra and specified Volvo-Penta SX Cobra dimensions.

How do I install the trailering clips safely?

Installation is straightforward when you follow the model-specific guidance: slide the clip onto the exposed ram and lock it into place to keep the outdrive supported. Some drives require trimming or cutting only if the cylinder anode is present — always use proper tools and follow safety precautions.

• For Alpha I, Bravo I & II without anode: no cutting required, just clamp on.
• For models with cylinder anodes: measure and carefully cut using proper metal/plastic tools.
• Ensure clips fully seat on the ram and the drive is supported before towing.
• Inspect clamps for secure engagement and bright-color visibility before departure.

What are these clips made of and how long will they last?

Mavnai trailering clips are manufactured from a dense, composite plastic engineered for toughness and thermal stability. The material resists wear and offers UL94 V-0@1.6mm flame retardant performance, so these clips withstand typical marine exposure while remaining lightweight and corrosion-free.

• High-grade composite plastic for durability and impact resistance.
• Good thermal stability and flame-retardant rating (UL94 V-0@1.6mm).
• Bright red-orange finish improves visibility and identifies protection points.
• Corrosion-free alternative to metal spacers in saltwater environments.

How do these clips protect my hydraulic system while trailering?

By clamping to the trim cylinder rams and holding the outdrive in a supported position, the clips reduce the load and movement transmitted to hydraulic lines and seals. That lowers the risk of leaks or damage caused by bouncing and heavy road forces during transport.

• Supports the weight of the stern drive to relieve hydraulic pressure.
• Limits travel and shock to cylinder rods and fittings while towing.
• Helps avoid costly repairs from seal or line failure on the trailer.
• Two-piece set protects both starboard and port sides during haul-out.

Who is this for: Boaters who trailer their outboard/sterndrive-equipped vessels and want a low-cost, corrosion-resistant way to protect trim cylinders and hydraulic fittings during transport. These Mavnai clips suit owners of Alpha, Bravo, Blackhawk, OMC Cobra and certain Volvo-Penta drives who need a visible, durable clamp set that’s easy to install and maintain. If you tow regularly, want to minimize hydraulic stress while trailering, and prefer non-metal hardware that resists saltwater corrosion, this two-pack is designed for you.