Turbosmart 45mm Wastegate Gen 5 Hyper-Gate


The Gen V Turbosmart 45mm Wastegate is designed with compact size and maximum flow in mind. It provides the highest level of boost control in its class.

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Turbosmart 45mm Wastegate Gen-V WG45 Hyper-Gate

Included in the Box 
• Wastegate unit (pre-assembled with spring as per order)
• SS316 Valve seat
• Inlet V-Band
• Inlet SS304 weld flange
• Outlet V-Band
• Outlet SS304 weld flange
• Collar tool (master/slave)
• 17/7 PH 3, 5, 7, 14 psi spring kit (1x spring installed)
• 4x 1/8” NPT plugs (1x installed) / 2x 1/8” NPT nipples
• Sticker
• Instruction card


The Gen-V WG45 Hyper-Gate45 external wastegate is the ultimate in boost control and quality. We switched from the Tial 44mm after real-world testing showed it was no match for the newest design from Turbosmart.

The WG45 has superior thermal capacity, handling the most demanding applications with ease. It features a rotatable actuator which makes installation in tight spaces much easier. The diaphragm design is hands down the best in the industry and able to withstand any abuse you throw at it. The internal design outflows anything in its size range.

If you’re in the market for a wastegate in the 1 3/4″ (44mm & 45mm) size range you won’t find anything better at any price.


Fits all popular 44mm flanges.  Suitable for medium-large capacity engines with medium frame turbochargers systems -or- to be used as twin wastegate configuration for high power twin-scroll setups.

Valve diameter 45mm
Mass 1006g
Actuator linearity 1.02% of full lift (BFSL)
Set pressure accuracy +/- 0.5 psi of base pressure
Safe working pressure max. 220 psi / 1520 kPa / 15 bar
Safe inverted pressure max. 180 psi / 1250 kPa / 12.5 bar
Actuator life 550k cycles @ 180ºC ambient
800k cycles @ 80ºC ambient
Actuator/Valve ratio 2.07:1
Max. spring base pressure 26 psi / 180 kPa / 1.8 bar
Min. spring base pressure 3 psi / 21 kPa / 0.2 bar
Port fittings type Air: 2x 1/8” NPT top chamber
Air: 2x 1/8” NPT lower chamber
Liquid Cooling: 2x 1/8” NPT
Port fittings type Air: 2x 1/8” NPT top chamber
Air: 2x 1/8” NPT lower chamber
Liquid Cooling: 2x 1/8” NPT

Max. thermal stress (non-cooled)* >45min @ 1250ºC EGT continuous
Max. thermal stress (h2O cooled)* >24hr @ 1250ºC EGT continuous
Max. ambient/compartment temp. 260ºC / 500ºF
Max. actuator temp. 310ºC / 590ºF

Main Body High temp 347 SS
Diaphragm Proprietary Silicone w/ nomex
Actuator housing 6061 T6 anodised Al.
Valve Guide Nitronic 60
Valve EV8 w/ proprietary plating
V-Band Heat treated 431 SS w/ 18-8 nut
Weld Flanges 304 Stainless Steel
Springs 17/7 PH Stainless Steel
Beryllium (Be) 0%

Max. Flow 193.6 CFM/5.48m3
/min @1psidP

Additional information

Wastegate Color

Black, Blue, Red, Purple

Wastegate Spring

7 PSI Spring, 14 PSI Spring