Self Contained Steering Systems

Outboard Hydraulic Cylinders

OUTBOARD SIDEMOUNT CYLINDER KITS

OUTBOARD SIDEMOUNT CYLINDER KITS provide a superior method for steering large outboard engines. We manufacture a solid stainless steel side mount pin which replaces the hollow engine tilt tube. This bar provides a secure mount for our stainless sterndrive cylinder. The clevis joint on the piston rod attaches to a rear plate (sold separately) on the back of the engine. One cylinder is used on single engines and two cylinders on multiple installations. Single engines with RH rotation mount the ram on the starboard side of the engine. All part numbers are for one cylinder and mount assembly.

SIDEMOUNT CYLINDER KIT PART NUMBERS

	Integral STD. Clevis Joint	Notes
MERC® 2L, 2.5L, 3L NO INTERNAL	KRSM-9000	9″ RAM – NO INTERNAL SPACER
MERC PRE ’98 2.4L,2.5L	KRSM-9010	9″ RAM – INTERNAL SPACER
MERC PRE ’98 BIG COWL (INT’L SPACER)	KRSM-9020	9″ RAM – INTERNAL SPACER
OMC V6 & V8 ’93+	KRSM-9500	10″ RAM – NO INTERNAL SPACER
OMC V6 & V8 PRE ’93	KRSM-9510	9″ RAM – NO INTERNAL SPACER
YAMAHA® V6	KRSM-9600	9″ RAM – NO INTERNAL SPACER
SUZUKI® V6	KRSM-9700	9″ RAM – NO INTERNAL SPACER

MERC is a registered trademark of the Brunswick Corporation. Yamaha is a registered trademark of Yamaha Motor Corporation. Suzuki is a registered trademark of Suzuki Motor Corporation

OUTBOARD FRONTMOUNT CYLINDER KITS

OUTBOARD FRONTMOUNT CYLINDER KITS provide an excellent alternative to the side mount configuration as rear plates do not need to be attached to the motor. The compact yet rugged design allows maximum turning angles and full independent trimming of multiple motor installations. All hardware is made from polished 316 stainless steel. Front mount rams are available in the standard fixed tube configuration or the fixed rod design, depending on the application – consult your sales specialist

FRONTMOUNT CYLINDER KIT PART NUMBERS

	Fixed Tube Front Mount	Notes
MERC® 3.0L	KRFM-2000	9″ STROKE
MERC/YAMAHA 4 STROKE®	KRFM-2100	9″ STROKE

	Fixed Tube Front Mount	Notes
MERC 225, SINGLE MOTOR	KRFM-2251	7″ STROKE
MERC 225, TRIPLE/ QUAD STBD. MOTOR	KRFM-2253	7″ STROKE
MERC 225, TRIPLE/ QUAD STBD. MOTOR	KRFM-2254	7″ STROKE
MERC 225/250XS CENTER DROP	KRFM-2255	7″ STROKE
MERC 225/250XS TRIPLE, DROP STBD. MOTOR	KRFM-2256	7″ STROKE
MERC 225 SINGLE MOTOR	KRFM-2258	9″ STROKE
MERC 225 TRIPLE/ QUAD STBD. MOTOR	KRFM-2259	9″ STROKE
MERC 225 TRIPLE / QUAD PORT MOTOR	KRFM-2260	9″ STROKE
MERC 250XS EVEN BRACKETS	KRFM-2500	7″ STROKE
MERC 250XS TWIN / PORT MOTOR	KRFM-2501	7″ STROKE
MERC 250XS TWIN/TRIPLE STBD.	KRFM-2502	7″ STROKE
MERC 250XS TRIPLE CENTER / QUAD PORT	KRFM-2503	7″ STROKE
MERC 250XS QUAD STBD.	KRFM-2504	7″ STROKE
YAMAHA® 250, 4 CYC. SINGLE, EVEN BRKTS	KRFM-2505	7″ STROKE
YAMAHA 250, 4 CYC. OFFSET BRKTS,PORT	KRFM-2506	7″ STROKE
YAMAHA 250, 4 CYC. OFFSET BRKTS, STBD.	KRFM-2507	7″ STROKE
YAMAHA 250, 4 CYC. OFFSET BRKTS, CEN.	KRFM-2508	7″ STROKE
YAMAHA 250, 4 CYC. OFFSET BRKTS, QUAD	KRFM-2509	7″ STROKE

MERC is a registered trademark of the Brunswick Corporation. Yamaha and Yamaha 4 Stroke are registered trademarks of Yamaha Motor Corporation.

Outboard Mounting Plates

MANY OUTBOARD APPLICATIONS REQUIRE ATTACHING POINTS for steering and tie bars that are not provided on the stock engines. LATHAM MARINE INC. manufacturers a wide variety of plates from 316 stainless steel to fit most large outboards. Performance boats should use rear plates to attach SIDEMOUNT STEERING RAMS and tie bars because this eliminates the play caused by steering through the tiller arm and engine mounts. Engine powerheads never need to be removed to install LATHAM outboard plates, but cowlings will sometimes have to be modified.

MERCURY® 200 PLATE SYSTEM*

MERCURY® 200 PLATE SYSTEM* provides a secure rear mounting plate without the need for powerhead removal or extensive machine work. The support plate kit is used in conjunction with a rear wing plate for steering, or with a rear tie bar plate for tie bars only. Lower cowling must be trimmed. Engine fasteners included.

* PATENT #4, 964, 354

MERCURY HIGH PERFORMANCE® 2.5 REAR PLATES

MERCURY HIGH PERFORMANCE® 2.5 REAR PLATES attach with four studs and lock nuts at the rear of the powerhead (Stud kit sold separately). Cowl modifications are not necessary with high performance lift-off cowls. Please note these plates require the high performance exhaust adapters to attach to the engine. Stock engines with high performance exhaust adapters should use these rear plates.

MERCURY® 3.0 LITRE REAR PLATE KITS

MERCURY® 3.0 LITRE REAR PLATE KITS are designed for Merc’s newest V6. They install easily because no machine work is necessary, but cowlings must be trimmed. Bolts and lock nuts to attach plates to engines are included. Fits Merc 225HP 3.0 liter engines.

OMC/BRP® REAR PLATE KITS

OMC/BRP® REAR PLATE KITS are designed to fit Johnson® and Evinrude® V-6 and V-8 outboards. The plate kits for the V-8 fit only the old OMC V-8 motors, while the V-6 plate kits fit the new V-6 motors, now manufactured by Bombardier Recreational Products® (BRP). Studs and lock nuts* to attach plates to engines are included. Cowlings must be trimmed.

* Specify 5/16″ or 3/8″ powerheads bolts on V-6 engines

YAMAHA® REAR PLATE KITS

YAMAHA® REAR PLATE KITS include studs and lock nuts to attach plates to engines. Cowlings must be trimmed. Plates are not shown but look similar to OMC/BRP® plates.

SUZUKI® REAR PLATE KITS

SUZUKI® REAR PLATE KITS fit all V-6 engines and include studs and lock nuts to attach plates. Cowlings must be trimmed. Plates are not shown but look similar to OMC plates.

Mercury, Mercury High Performance, MERC are registered trademarks of the Brunswick Corporation. Yamaha is a registered trademark of Yamaha Motor Corporation. Suzuki is a registered trademark of Suzuki Motor Corporation. Johnson, Evinrude, Bombardier Recreational Products and BRP are registered trademarks of Bombardier, Inc.

Outboard Tie Bars Assemblies

ALL MULTIPLE OUTBOARD INSTALLATIONS

ALL MULTIPLE OUTBOARD INSTALLATIONS require one or more tie bars to keep the motors parallel and equalize loading. Boats running 65 mph or more with multiple outboards should use an external tie bar assembly; either with the LATHAM side mount cylinders and wrap plates or with the LATHAM front mount cylinders. The front mount cylinder and tie bar system will allow the driver greater latitude for independent trimming and tilting without damage to tie bar or motor components. LATHAM MARINE INC. TIE BARS are constructed from 316 stainless steel and satin finished for maximum corrosion resistance. Solid bars are used up to 36″ long. And tubular construction is utilized for longer bars.

SOLID BARS

TUBULAR BARS

CLEVIS JOINTS

ROD ENDS

STANDARD SERIES

ART SERIES - HEAVY DUTY

PLEASE NOTE: Jam nuts sold separately.

Outboard Bolt Kits

ATTACHING HARDWARE

ATTACHING HARWARE – All steering rams and tie bars require special bolts and spacers to attach them to plates or mounts. Clevis joints require stepped bolts with the exact length to prevent damage to the clevis bushings.

Outboard Self-Contained Steering Systems

THE CAPILANO® (Seastar®) SYSTEM is the best choice in self-contained manual hydraulic helm assemblies. These smooth acting, positive displacement helms have a convenient adjustment knob to vary the fluid output from 2.7 to 5.4 cubic inches per turn of the wheel, thus varying the number of turns from hardover port to hardover starboard.

CAPILANO® SYSTEM FLUID

CAPILANO® SYSTEM FLUID is carried in the helm, requiring no air pressure or separate tank. The shaft accepts standard 3/4″ taper hubs, and a remote filler kit is suggested for easier bleeding and operation. Only balanced cylinders and twin cylinders can use the 1275V helm. Single unbalanced cylinders have to use the Hynautic® helm and reservoir shown below.

THE HYNAUTIC® HELM AND RESERVOIR

THE HYNAUTIC® HELM AND RESERVOIR are required with self-contained systems that consist of a single unbalanced cylinder as in the case of a sidemount cylinder on a single outboard motor.

CAPILANO, Seastar and HYNAUTIC are registered trademarks of Teleflex Incorporated.

* Note: Please refer to the website hierarchy for the list of sub-categories to link to from this page. These are already listed and described in detail in this document.

Steering Wheels

TRIM WHEELS BY LATHAM put the world of performance steering technology at your fingertips! Now you don’t have to remove your hand from the wheel to operate the power trim. Three water resistance switches operate your power trim pumps, bringing your drives up and down together, while your stock trim panel operates the drives independently. Sealed dash housing eliminates dangling cords and wires. TRIM WHEELS are now available for LATHAM full hydraulic systems and most other hydraulic and cable systems. Please specify number of drives.

COMPETITION STEERING WHEELS

COMPETITION STEERING WHEELS have a durable foam grip over stainless steel rim and spokes for zero compass deflection and corrosion resistance. This wheel has been the standard of offshore racing for years.

LATHAM TRIM WHEELS

LATHAM TRIM WHEELS were designed for marine use with stainless steel spokes and rim. All three spokes are equidistant to make Trim Wheel switches easy to reach. Grip is made of durable black or white foam. These wheels are supplied with Latham Trim Columns specially designed to work with Latham Trim Wheels.

HUB ADAPTERS

HUB ADAPTERS are required to connect steering wheels to different styles of helms and columns, and cover kits conceal the nuts and bolts.