Marine Dynamics Stingray XR4 Hydrofoil

The StingRay XR4 Hydrofoil is designed to provide maximum lift, blast boats out of the hole quicker than ever before, and keep boats on plane at lower speeds – leading to significant fuel savings! Porpoising, chinewalking, cavitation, and ventilation are reduced or eliminated – stabilizing the boat and providing a safer and more comfortable ride. For boats pulling tubers, skiers, or wakeboarders the StingRay XR4 Hydrofoil helps pull them up quicker, smooths out the wake for more enjoyable towing, and increases driver visibility by getting the bow of the boat down sooner. The downturned wings also pack water tightly around the prop, making this an ideal solution for boats experiencing cavitation problems.

 The 2-Bolt Installation method is the industry’s most secure and easiest installation giving you confidence and peace of mind while on the water – guaranteed to never come off your engine. Engineered with the very latest in hydrofoil technology, the StingRay XR4 Hydrofoil provides top-notch performance enhancement, next-gen styling, and pays for itself in fuel savings – making this one of the best performance accessories you can add to your boat.

• Gets boats on plane quicker
• Keeps boats on plane at lower speeds
• Improves holeshots
• Maximizes stabilization
• Saves fuel
• Promotes safety by increasing visibility at lower speeds
• Reduces chinewalking, porpoising, cavitation, and ventilation

Installation Instructions

WARNING: WITH ALL ENGINE INSTALLATIONS, ENSURE BOAT ENGINE IS OFF,

KILL SWITCH IS DISENGAGED, AND GEAR SHIFT IS IN NEUTRAL POSITION.

TOOLS NEEDED:

• Phillips Head Screwdriver
• Drill and 1/4” Drill Bit
• 7/16” Socket and Ratchet

INSTALLATION HARDWARE:

• (2) Nylon Hex Nuts
• (2) 1/4-20 x 1” Stainless Steel Bolts
• (2) 1/4” Flat Stainless Steel Washers

INSTALLATION STEPS:

1. Make sure all installation hardware is included.

2. Slide the StingRay XR4 Hydrofoil onto the cavitation plate as far forward as possible with the coloured graphics side facing upwards.

3. Using the Drill and 1/4” Drill Bit, drill through the cavitation plate using the two holes on the top side of the hydrofoil as a guide. Make sure to keep the drill perpendicular to the cavitation plate while drilling.

4. Place the 1/4-20 x 1” Stainless Steel Bolts through the holes on top of the XR4 Hydrofoil, and attach a Flat Washer and Nylon Nut to each Bolt from the underneath side of the hydrofoil. Using the Phillips Head Screwdriver and the 7/16” Socket and Ratchet, secure the Bolts by tightening the Nylon Lock Hex Nuts.

5. BEFORE OPERATING, check for propeller clearance by slowly turning the propeller by hand to make sure there is no interference between the StingRay XR4 Hydrofoil and the propeller.

NOTICE: This product should make an immediate performance improvement in your boat/motor…if for ANY REASON it does not, then remove this product and utilize the Customer Contact Form on our website (www.StingRayHydrofoil.com) for assistance.

Any surface “flow marks” around holes that appear to be cracks are not cracks, but they are a normal part of the molding process and do not affect the part strength or performance.

Royal Mail Service Update: Please be aware when choosing Royal Mail as your preferred delivery method, your delivery time may be impacted by ongoing strikes and may take up to 20 working days. If your order is time critical we suggest choosing a courier or Next Day Service

Our Mail Order team ship chandlery, yacht parts and sailing clothing around the world. We use the best value couriers available, and we will endeavour to get your products to you as quickly and as cost effectively as possible.

International Orders: Due to delays we have had to suspend our international delivery options. 

UK Standard Delivery

• UK Mainland 0 - 2Kg (small jiffy) £3.95 Royal Mail Service. Despatch within 3- 5 working days, delivery in 7-10 working days for orders under £50.00
• UK Mainland up to 25Kg £5.95 Courier service with signature. Despatch within 3- 5 working days, delivery in 7-10 working days
• UK Mainland 25Kg+ Price on request
• UK Mainland Next Day 0 - 25Kg £9.95 Courier service with signature, orders must be placed before midday
• Northern Ireland, Highlands & Islands 0 - 2Kg (small jiffy) £3.95 Royal Mail Service. Despatch within 3- 5 working days, delivery in 5-7 working days for orders under £50.00
• Northern Ireland, Highlands & Islands 1 - 25Kg £10.95 Courier service with signature. Despatch within 3- 5 working days, delivery in 7-10 working days
• Northern Ireland, Highlands & Islands 25Kg+ Price on request
• Channel Islands 0 - 2Kg (small jiffy) £5.95 Royal Mail Service Despatch within 3- 5 working days, delivery in 5-7 working days for orders under £50.00
• Channel Islands 1 - 25Kg £13.50 Courier service with signature. Despatch within 3- 5 working days, delivery in 5-7 working days
• Channel Islands 25Kg+ Price on request

UK Exceptional Delivery

• UK Mainland; Antifoul & paints £5.95
• UK Mainland; Inflatable dinghy £10.00
• UK Mainland; Liferafts £17.50
• UK Mainland; Flares £49.95
• Northern Ireland, Highlands & Islands; Antifoul & paints £9.95
• Northern Ireland, Highlands & Islands; Inflatable dinghy price on request
• Northern Ireland, Highlands & Islands; Liferafts price on request
• Northern Ireland, Highlands & Islands; Flares not available to ship at this time
• Channel Islands; Antifoul & paints £13.50
• Channel Islands; Inflatable dinghy price on request Channel Islands; Flares not available to ship at this time

For further delivery information click here.

Standard Returns

If you are not entirely happy with your purchase, we will exchange or refund your goods in full, provided that the items are returned within 14 days of receipt.*

Please check the condition of goods on arrival - we are unable to accept goods damaged during shipping after 14 days.

Returned goods must be packaged securely, with all original packaging undamaged and in a saleable condition i.e. shoe boxes must be in the same condition as when received.

Goods must be unused and security seals intact.*

If you would like to return goods because they were ordered incorrectly or if clothing does not fit, return postage will be at your expense. If you would like us to replace the goods with another size or colour, we will charge carriage on the replacement.

Please be aware that some navigational and safety products may be dated, and as such a full refund may in some cases not be possible. If you are purchasing dated navigational charts we suggest you contact us for more information.

Faulty Goods

If you receive your goods and believe them to be faulty, please contact us straight away with a brief description of the problem. If we require you to return the product for a replacement, we will send you a pre-paid Royal Mail label for delivery back to us. Unfortuantely we cannot send the courier back to collect the items.

Returning goods to Force 4 is easy!

1. Please contact us by ringing 0345 1300 710 or email on [email protected]. This way we'll be able to determine whether you would like to return the product for a refund or whether you'd like to exchange the product. We are unable to process the return of faulty goods that we're not expecting.
2. We'll then give you a returns number. This returns number will need to be clearly marked on the outside of your parcel so it can be identified on arrival. Please note, failure to mark a returns reference number on the outside of your parcel may result in a delay in processing your return.
3. Don't forget your proof of postage, just in case!
4. Once we receive the item we'll be able to proceed with a refund or an exchange.

*this excludes faulty goods with manufacturers defects. If goods are found to be faulty during use, after the returns period, please just give us a ring on 0345 1300 710 and we'll be happy to help.

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