Ultraflex Nautech 1 Hydraulic Steering For Outboard Max 300hp

Ultraflex Nautech 1 is hydraulic steering system for boats and dinghies, suitable for outboard motors over 150HP and up to 300Hp of power, uses a balanced central mount cylinder (requires an equal number of turns from half stroke to full stroke 4.7 turns left , 4.7 turns right).

NAUTECH 1 kit includes:

Ultraflex front mount pump for UP28F hydraulic steering
Compact structure
- Axial piston system
- Equipped with a non-return valve that prevents reversibility
- Integrated overpressure protection valve
- 3/4 ”tapered shaft in stainless steel
- Non-return valve and shaft seal easily accessible in case of replacement
-Rotor built in cast iron for a longer life
-Complete with 90 ° adjustable fittings for 3/8 "(9.5 mm) pipe

Pump Model: UP28F
Ultraflex code: 42459R
Mounting: Front
Capacity / Revolution: 28 cc - 1.7 cu.in
Number of pistons: 5
Overpressure Valves Calibration: 70 Bar - 1000 PSI
Max diameter of the steering wheel: 710 mm - 28 "
Weight: 5 Kg

UC128-OBF Cylinder - Balanced: equal number of revolutions from half-stroke to full-stroke
Adjustable fittings for ease of installation, high-strength stainless steel connection bolt (ULTRABOLT)
The UC128 cylinder, built with high quality materials, including the stainless steel rod, the gaskets and
high strength connecting arms, it has been designed for a long life. It is easy to
install and is compatible with almost all 2 and 4 stroke outboard engines on the market.
Recommended for engines up to 300HP.

UC128-OBF / 1 cylinder is compatible with the following engines:

MERCURY MARINER
135-150-175 Optimax 2T Year 1999-today
200-225-250 Optimax 2T Year 1999-present
RACING 300 Optimax 2T Year 1999-2011
100-115 EFI 4T Year 2007-present
115-125-150 EFI 2T Year 1990-2007
225-250 EFI 2T Year 2000-2007
250 Saltwater EFI 4T Year 2007-2011
135 Verado L4 4T Year 2004-2006
150-175-200 Verado L4 4T Year 2004-present

YAMAHA
F70 4T Year 2010-today
F90-F100-F115-F150 EFI 4T Year 1999-2007
F115-F150 Year 2004-present
F200-F225-F250-F300 4T Year 2006-present

HONDA
BF75-90 4T Year 1995-today
BF115A Year 2009-present
BF135-150 4T Year 2005-present
BF90-BF150 V-TEC 4T Year 2008-today
BF175-200-225-250 4T Year 2001-present

SUZUKI
DF100-115-140 4T * Year 1998-2008
DF100-115-140 4T new model Year 2008-today
DF150-175 4T Year 2006-present

TOHATSU
70-90-115 TLDI 4T Year 2004-2011

SELVA
80 Portofino / Tigershark 2T Year 1995-today
150EFI Killer Whale 4T Year 2000-present

JOHNSON
BJ90-115-140 4T Year 2001-2007

ATTENTION
The diagram above is to be considered only indicative and however requires careful verification by the installer.

OIL 15 Hydraulic oil 2 liters.

To complete the system, the following products must be purchased separately, which are NOT INCLUDED in the kit:

A ULTRAFLEX KIT OB piping kit with pre-assembled fittings based on the required length, see on our website or click on the accessories tab of this page.

A steering wheel to be selected from those on our site,

See the images to see the dimensions of the components.

Package includes: 1pc Ultraflex UC128-OBF / 1 cylinder with hose connector, 1pc Ultraflex UP28F pump, 2 liters of hydraulic steering oil, Assembly instructions.