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| Turbo XS Blow-Off Valves |
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JSC Speed offers FREE SHIPPING on all Turbo XS blow-off valves, and will PRICE MATCH competitors if you contact us prior to ordering. These blow off valves require adapter kits for vehicle-specific installation, which are sold separately at the bottom of this page. They can be used as universal valves for weld-on applications as well.
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Type H
The BOV Type H provides greater venting flow than the Type S and is designed for turbo charged engines running 10 to 25 psi boost. Each valve is individually tested to hold 30 lbs. of boost. Sizing of valve is based on flow and not boost pressure. The valve vents to atmosphere at sound pressure levels in excess of 110 db making it one of the loudest on the market. This valve requires a vehicle specific mounting flange, sold separately.
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| Type H Blow Off Valve |
txs-BOV-H | $179 | $161 | 15 in stock | |
Type H-RFL
A new larger billet aluminum body and a beefier piston ensures the valve remains smooth under the most demanding circumstances. This valve relieves compressor pressure surge caused by changing gears or backing off the throttle quickly and is designed for turbo charged engines running up to 25 psi boost. If you need to ask this valve is too loud for you! This valve requires a vehicle specific mounting flange, sold separately.
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| Type H-RFL Blow Off Valve |
txs-BOV-H-RFL | $189 | $170 | 39 in stock | |
Type H Hybrid 50/50
The Turbo XS Type H Hybrid Blow off valve is ideal for Mass Air Flow (MAF) metered cars that want some noise but don't want the problems associated with venting to atmosphere. The Hybrid Type H is CNC machined out of billet aluminum and is specifically designed with high boost applications in mind. This BOV recirculates 50% of air and vents to atmosphere 50%. This valve requires a vehicle specific mounting flange, sold separately. This 50/50 BOV will not work on a WRX/ STi TMIC.
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| Type H Hybrid 50/50 |
txs-BOV-H-HYB | $189 | $170 | 6 in stock | |
Racing Bypass Valve H-34
Racing Bypass Valve Type H plumbs back into the car’s air intake, the valve is ideal for Mass Air Flow (MAF) metered cars where venting to atmosphere can create a "rich" air/fuel ratio. The Racing Bypass Valve Type H is CNC machined out of billet aluminum and is specifically designed with high boost applications in mind. This valve is not loud compared to an atmosphere BOV. This valve requires a vehicle specific mounting flange, sold separately.
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| Racing Bypass Valve H Reversible |
txs-RBV-H | $189 | $170 | 1 in stock | |
Racing Bypass Valve H Reversible
Identical in design to the TXS RBV-H34 with the exception that the outlet of the valve is the standard Type H female inlet instead of a 34mm hose adapter. This allows the valve to be used either in normal fashion or "reversed". Using the valve in the reversed orientation ensures that the valve will only open up under vacuum. This is perfect for your drag racing car running 35+ psi. This valve requires a vehicle specific mounting flange, sold separately.
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| Racing Bypass Valve H-34 |
txs-RBV-H34 | $189 | $170 | 10 in stock | |
| Turbo XS Blow Off Valve Type-H Adapter Kits: |
| These vehicle specific bolt-on kits making installing a type H, H-RFL, or RBV-H34 bypass valve a simple job.
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| Subaru WRX 02-07 |
txs-H-WRXG4 | $39 | $35 | 16 in stock | |
| Subaru STi 04-09 |
txs-H-WRXG4 | $39 | $35 | 16 in stock | |
| Toyota Supra 87-98 |
txs-H-SUPRA | $39 | $35 | Out of Stock - Call | |
| VW/Audi 1.8T |
txs-H-1.8T | $39 | $35 | 1 in stock | |
| Lancer Evolution 8 |
txs-H-EVOVIII | $49 | $44 | 7 in stock | |
| Mazdaspeed3 |
txs-H-MPS6 | $39 | $35 | 2 in stock | |
| Toyota MR2 91-95 |
txs-H-MR2 | $49 | $44 | 1 in stock | |
| Eclipse/Talon 89-94 |
txs-H-ECL-G1 | $69 | $62 | 1 in stock | |
| Eclipse/Talon 95-99 |
txs-H-ECL-G2 | $69 | $62 | 1 in stock | |
| 300zx TT 90-96 |
txs-H-300ZX | $69 | $62 | 1 in stock | |
| Dodge SRT4 03+ |
txs-H-SRT4 | $79 | $71 | 4 in stock | |
| Turbo XS Type S and RBV 25 Blow Off-Valves:
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These valves are not compatible with the TurboXS Type-H vehicle adapter kits.
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Type S
The BOV Type S is recommended for small to medium sized turbo charged engines running up to 15 psi boost. Each valve is individually tested to hold 30 lbs. of boost. Sizing of valve is based on flow and not boost pressure.
DOES NOT WORK WITH TURBOXS VEHICLE-SPECIFIC ADAPTER FLANGES.
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| Type S |
txs-BOV-S | $129 | $116 | 2 in stock | |
Racing Bypass Valve Type 25
The Racing Bypass Valve Type 25 was specifically designed to replace the 1 inch (25mm) Bosch Bypass Valve used in most Volkswagen and Audi applications. The Bosch valve is prone to failure in stock application and not adequate for holding boost in "chipped" 1.8T equipped vehicles. The RBV-25 spring tension is adjustable, making it ideal for your modified vehicle. This valve is not loud compared to an atmosphere BOV.
DOES NOT WORK WITH TURBOXS VEHICLE-SPECIFIC ADAPTER FLANGES.
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| Racing Bypass Valve Type 25 |
txs-RBV-25 | $169 | $152 | 4 in stock | |
RBV BOV kit for 02-07 WRX & 04-09 STi
Gone are the days of buying a Turbo XS BOV and Turbo XS BOV adaptor plate. The Turbo XS RBV for the 02-07 WRX & 04-09 STi Blow off valve is one piece and comes with a new BOV gasket, so the base can never leak again. The design has also been altered to make this BOV connect directly to the WRX or STi's stock recirculation fitting allowing you to get the performance from this BOV without being forced to vent to atmosphere, which can cause backfiring on MAP based cars like the WRX & STi. All in all this Turbo XS RBV BOV kit for the WRX and STi is the best we have seen from Turbo XS as far as Blow off valves is concerned and it may be the best BOV on the market today for your WRX or STi.
DOES NOT WORK WITH TURBOXS VEHICLE-SPECIFIC ADAPTER FLANGES. ONLY FOR 02-07 WRX OR 04-09 STI.
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| RBV BOV kit for WRX/STi |
txs-WS-RBV | $218 | $197 | 6 in stock | |
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