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GrimRacer Accessories


The best bits boats beg for

Cooling Jackets

28mm CNC Water Cooling Jacket AQUB9548 28mm CNC Water Cooling Jacket
This machined aluminum jacket is designed to circulate cooling water around a marine motor. The interior diameter is 1.1 in (28mm) and the model includes inlet and outlet tubes for cooling water
36mm CNC Water Cooling Jacket AQUB9518 36mm One-Piece Aluminum Water Cooling Jacket
Fit this jacket around motors of up to 1.4 in (36mm) in diameter to provide powerful cooling. Includes inlet and outlet fittings to circulate cooling water.

Running Hardware

CF Trim Plate Set 25-35" (includes 2 trim plate sets) AQUB9541 Carbon Fiber Trim Plate Set 25-35"
Fully assembled with CNC mounting plates and stainless steel mounting hardware, these Trim Plates are the perfect replacements for worn out pieces on the Revolt 30 FE Mono.
Rudder Assembly 25-35" (complete) AQUB9542 GrimRacer Rudder Assembly
You won’t get very far on the water without a good rudder. Fortunately, AquaCraft has the best. This GrimRacer Rudder Assembly features a water pickup built into the CNC Double Bevel Rudder Blade to circulate cooling water and keep running temperatures down. Bronze bushings in the pivot pin help prevent wear. The CNC rudder control arm is precise and reliable, and a “break-away” brass bolt protects the assembly and transom from being damaged in the event of an accident. The rudder mount is also CNC machined.
Strut Assembly 25-35" AQUB9543 Strut Assembly 25-35"
The Mono Strut Assembly houses and supports the drive system, including the prop. The GrimRacer assembly is CNC machined with a double bevel leading edge and CNC aluminum 70mm mounting bracket. It’s fully adjustable for depth and drive angle for easy set-up changes to mono hulls, and it fits most common stuffing tubes.
Turn Fin assembly 25-35" (1 set, takes 2 per boat) AQUB9544 Turn Fin assembly 25-35" (1 set, takes 2 per boat)
To help keep your boat stable and prevent it from spinning out during a turn, the GrimRacer Mono Turn Fin Set features full tilt adjustability, plus up and down. A double bevel, sharpened leading edge makes for higher efficiency, and CNC machined construction adds durability. The universal design allows them to be mounted on either side of the transom, and they fit mono hulls 25" to 35" in length.
Rudder Bracket 25-35" Hydro/Catamaran AQUB8759 Rudder Bracket 25-35" Hydro-Catamaran
Replacing the rudder bracket on your catamaran has never been easier than with this all aluminum replacement set from AquaCraft.
Strut Mounting Bracket 25-35" Hydro/Catamaran AQUB8812 Strut Mounting Brackets Hydro/Cat
Aluminum brackets that fit AQUB9543 for use with Hydroplanes and Catamarans.
Motor Coupler 5mm Shaft To .150" Cable AQUB9545 Motor Coupler 5mm Shaft To .150" Cable
Motor Couplers secure the drive cable to the motor, preventing the cable from slipping or coming loose. The GrimRacer Motor Coupler uses hardened steel that pinches the cable and secures it with a no-slip locking chuck design. The coupler features a rust-resistant coating, and fits all 5 mm shaft brushless motors and boats with .150" drive cables, including the Revolt 30, Motley Crew and others.
Rudder Blade 25-35" Hulls AQUB8753 Rudder Blade 25-35" hulls
Losing a rudder blade can leave you dead in the water, but this replacement blade comes with everything you need to get your boat back up to speed. It’s perfect for most AquaCraft boats between 25 and 35 inches in length.
Rudder Bracket 25-35" Hulls AQUB8754 Rudder Bracket 25-35" hulls
A whole world of damage can be done to a boat’s control systems in seconds after an underwater strike. Fortunately, AquaCraft has you covered. This replacement rudder bracket will have you patched up and on the waves again in no time.
Rudder Back Plate Mount 2535 AQUB8757 Rudder Back Plate Mount 25-35" hulls
Replace damaged or lost Back Plate Mounts for you rudder with this all-metal kit which includes the mount, two hex socket screws, two locknuts, and two washers.
Rudder Blade Mount 25-35" Hulls AQUB8755 Rudder Blade Mount 25-35" hulls
Made from metal, and with hinge pin and setscrew included, this Rudder Blade Mount has everything you need to fix damage to this part of the rudder after loss or damage.
Rudder Control Arm 25-35" Hulls AQUB8756 Rudder Control Arm 25-35" hulls
With this all-metal construction Rudder Control Arm you can replace damaged components of your boat.
Strut 25-35" Hulls AQUB8808 Strut 25-35" Hulls
An aluminum replacement strut for AQUB9543.
Strut Back Plate Mount 2535 AQUB8811 Strut Back Plate Mount 2535 Mono
A metal replacement strut back plate mount for AQUB9543. Includes (1) strut back plate mount, (2) hex socket screws, (2) locknuts and (2) washers.
Strut Mounting Brackets 25-35" Left/Right AQUB8810 L/R Strut Mounting Brackets 2535 Mono
Aluminum replacement strut mounting brackets for AQUB9543.
.187" Drive Dog AQUB9547 .187" Drive Dog
Fits most all 3/16” prop shafts. Features metal construction. Includes set screw.
AQUB8003 .187" Prop Shaft Brass Bushing
Features brass construction. Measures 5.9” (150 mm) long with 0.187” inner diameter. Can be installed over 3/16” prop shafts.
.187" Prop Shaft Brass Bushing AQUB7759 M4 Prop Nut Stainless Steel
Made of stainless steel with a nylon insert.


Transom Water Pick up Assembly AQUB9520 Transom Water Pickup Assembly
Mounts to transom of hull to provide water pickup. All necessary hardware, including water tube, 3 brackets, 2 mounting screws.
Aluminum Water Cooling Outlet AQUB9519 Aluminum Water Cooling Outlet
Features aluminum construction, drilled to allow water passage. Threaded, and includes nut for securing to hull.
Mini Transom wate Pick Up Assembly AQUB9045 Mini Transom Water Pickup Assembly
Specifically for mini boats, and mounts on transom of hull. Includes a black nylon bracket and 1 installation screw.
Water Tubing Line Blue 3' AQUB6904 Water Tubing Line Blue 3'
Pliable blue water tubing for quickly identifying water cooling lines for the SuperVee 27 Nitro. Not for use with gasoline or glow fuels.
.150" Cable Liner 10" AQUB7869 .150" Cable Liner 10"
The ideal replacement for worn or damaged cable liners. Can be installed on the UL-1 Superior.
Nylon Break-Away Rudder Bolts & Nuts AQUB7901 Nylon Breakaway Rudder Bolts & Nuts
Includes (2) 3x10mm white nylon bolts, (2) 3x10 steel nuts.
Water Cooling Jacket 36mm Diameter AQUB9540 Water Cooling Jacket 36mm Diameter
AQUB9540 Water Jacket Installation Procedure (PDF, 349 KB)
GrimRacer Precision Prop Balancer AQUB9575 GrimRacer Precision Prop Balancer
Prop balancing is critical for maximizing a boat's performance, as well as minimizing damage to electronics and parts. A precise bubble level is built into the one-piece extruded aluminum base. Three thumb screws provide perfect level adjustment. Comes with balancing shafts for 1/8", 3/16" and 1/4" bore prop hubs.
Propeller not included.
Cable Oil AQUB9550 GrimRacer Cable Oil 50WT 32oz
Specially formulated for marine auto-oil drive systems. Comes in a 32 oz. easy-pour container with resealable cap.

Starting Belts

Starting Belts

AQUB9530 GrimRacer Starting Belt 15”
AQUB9531 GrimRacer Starting Belt 17”
AQUB9532 GrimRacer Starting Belt 19”
Racers know that starting belts are the absolute best way to start up a boat — and we’ve got them! Belts are tapered to easily fit on engine flywheels, and fiber reinforced for durability. A single wedge cog design provides a more secure grip. Available in 15”, 17” and 19” lengths, for use on .12- to .91-size engines.
GrimRacer Silicon Jacket 36/45 AQUB9517 GrimRacer Silicone Jacket 36/45
Advanced tooling and technology make this lightweight, water-cooled silicone jacket a must for all Fast Electric boats. It directs water along the can surface of your 36-45mm diameter motor for extremely efficient heat removal. Two PVC tubes are included for connecting to your water cooling line.
GrimRacer 18 Hydro Turn Fin-Blue AQUB9515 GrimRacer 18 Hydro Turn Fin-Polished
AQUB9516 GrimRacer 18 Hydro Turn Fin-Blue

These lightweight aluminum, adjustable turn fins improve the straightaway and left/right handling of .12 - .18 powered hydroplanes. Each comes with mounting bracket and bolts plus instruction manual.
GrimRacer Cowl Locks AQUB9513 GrimRacer Cowl Locks (2)
Lightweight, stainless steel GrimRacer Cowl Locks work well on all types of R/C boats. They snap down tight and release easily with just a quick ¼ turn. Includes 2 complete sets per package with mounting brackets.
GrimRacer Pro Radio Box Tape AQUB9514 GrimRacer Pro Radio Box Tape
Ideal for sealing radio box lids and hull hatches, this clear 3M electrical tape resists fuel, water, oil, and nitro fuel. Each roll contains 72 yards of tape...enough to last an entire racing season! Watch the video.
GrimRacer Speed Grease Cable Lube AQUB9500 GrimRacer Speed Grease Cable Lube
Designed for both electric and nitro boats, this waterproof blue lubricant — with specially formulated, “non sling” properties” — reduces friction and wear on flex cable and direct drive systems. Watch the video.
GrimRacer Radio Box Seal Boot AQUB9503 GrimRacer Radio Box Seal Boot (2)
GrimRacer’s rubber seals have plastic reinforcement mounting supports and boots that stay supple and flexible over time. They fit 2mm to 4-40 size linkage wire.
GrimRacer Hull Rubber Drain Plug AQUB9506 GrimRacer Hull Rubber Drain Plug
Water inevitably gets inside any boat’s hull, usually through the hatch or cowl. You usually have no alternative but to dump it out through the hatch opening. Mount GrimRacer’s Rubber Drain Plug onto your transom and you’ll be able to drain water easily without opening the hatch. With its convenient “T” handle, the plug can stay on the hull and not be lost in your pit box.
GrimRacer Slide Cowl Lock AQUB9501 GrimRacer Slide Cowl Lock (2)
Perfect for all hull styles, injection-molded Slide Cowl Locks install easily and feature a durable slide bolt locking mechanism. They're included as standard equipment on the U-18 Miss Vegas Nitro RTR Hydroplane.
GrimRacer Waterproof Switch Boot AQUB9502 GrimRacer Waterproof Switch Boot
This switch cover includes an on/off plate with silicon switch boot cover. It fits nearly all standard on/off radio switch assemblies.
GrimRacer Receiver Balloon AQUB9504 GrimRacer Receiver Balloon (2)
Protect your receiver from moisture with GrimRacer’s elastic Receiver Balloon. One size fits all receivers. Two per package.
GrimRacer Antenna/Cable Seal Boot AQUB9505 GrimRacer Antenna/Cable Seal Boot (2)
Make your radio box water-tight — plug the exits for your antenna and throttle cable by fitting these rubber seals around their tubes. Flanged boots insert into the side or top of the radio box, with plenty of surface area to seal securely.
GrimRacer Radio Box Foam AQUB9509 GrimRacer Radio Box Foam
Cushion and protect your vital on-board radio gear by placing this foam around the receiver and receiver battery in your radio box.
Header Cooling Coil AQUB9213 Header Cooling Coil SV27 Nitro
An aluminum coil that wraps around the exhaust header to provide water cooling. Can be installed on the SuperVee 27 Nitro.
FE MONO Port Turn Fin AQUB9522 FE Mono Port Turn Fin
A subsurface strike is hard to avoid and can be highly damaging. Fortunately, should the worst occur, AquaCraft has you covered. With this Port Turn Fin you can get the steering system on your SuperVee repaired and be back on the water in no time!

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