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USE COUPON CODE "5OFF" DURING CHECKOUT FOR AN ADDITIONAL 5% OFF ON YOUR ENTIRE ORDER!


In observance of Memorial Day, Extreme PSI will be closed on Monday, May 27th. Orders received during this time will be processed on Tuesday, May 28th. In addition, we will be closing at 4:00 PM EST on Friday, May 24th.

Extreme PSI Merchandise

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Extreme PSI Merchandise

Extreme PSI Polished Aluminum Spark Plug Cover: Mitsubishi Evolution VIII & IX *SALE*
Extreme PSI Polished Aluminum Spark Plug Cover: Mitsubishi Evolution VIII & IX *SALE*
Price: $74.95
MSRP: $119.00 (save 37%)
Ships in 24 hours
Ships in 24 hours
Extreme PSI Pull-Over Hoodie ver. 2: Ash Grey CHRA *NEW*
Extreme PSI Pull-Over Hoodie ver. 2: Ash Grey CHRA *NEW*
Price: $24.95
MSRP: $39.99 (save 38%)
Out of stock
Extreme PSI Pull-Over Hoodie ver. 2: Black CHRA *NEW*
Extreme PSI Pull-Over Hoodie ver. 2: Black CHRA *NEW*
Price: $24.95
MSRP: $39.99 (save 38%)
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Extreme PSI Beanie
Extreme PSI Beanie
Price: $19.95
MSRP: $25.00 (save 20%)
Ships in 24 hours
Out of stock
Extreme PSI Pull-Over Hoodie ver. 1: Heather Grey *SALE*
Extreme PSI Pull-Over Hoodie ver. 1: Heather Grey *SALE*
Price: $16.95
MSRP: $32.99 (save 49%)
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Extreme PSI Pull-Over Hoodie ver. 1: White *SALE*
Extreme PSI Pull-Over Hoodie ver. 1: White *SALE*
Price: $16.95
MSRP: $32.99 (save 49%)
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Extreme PSI . com Front Windshield Decal
Extreme PSI . com Front Windshield Decal
Price: $14.95
MSRP: $20.00 (save 25%)
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Extreme PSI Pre-Shrunk "Long-Sleeve" Shirt ver. 2 (Black): Turbocharger CHRA *NEW DESIGN*
Extreme PSI Pre-Shrunk "Long-Sleeve" Shirt ver. 2 (Black): Turbocharger CHRA *NEW DESIGN*
Price: $14.95
MSRP: $30.00 (save 50%)
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Extreme PSI Pre-Shrunk T-Shirt ver. 2 (Black): Turbocharger CHRA
Extreme PSI Pre-Shrunk T-Shirt ver. 2 (Black): Turbocharger CHRA
Price: $12.95
MSRP: $25.00 (save 48%)
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Extreme PSI Pre-Shrunk T-Shirt ver. 2 (White): Turbocharger CHRA
Extreme PSI Pre-Shrunk T-Shirt ver. 2 (White): Turbocharger CHRA
Price: $12.95
MSRP: $25.00 (save 48%)
Ships in 24 hours
Extreme PSI Pre-Shrunk T-Shirt: Black
Extreme PSI Pre-Shrunk T-Shirt: Black
Price: $9.95
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Extreme PSI Pre-Shrunk T-Shirt: Heather Grey
Extreme PSI Pre-Shrunk T-Shirt: Heather Grey
Price: $9.95
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Extreme PSI Pre-Shrunk T-Shirt: White
Extreme PSI Pre-Shrunk T-Shirt: White
Price: $9.95
Ships in 24 hours
Extreme PSI Pre-Shrunk T-Shirt ver. 2 (New Design): Subaru *Sale*
Extreme PSI Pre-Shrunk T-Shirt ver. 2 (New Design): Subaru *Sale*
Price: $7.95
MSRP: $25.00 (save 68%)
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Extreme PSI Pre-Shrunk T-Shirt: Women's V-Neck
Extreme PSI Pre-Shrunk T-Shirt: Women's V-Neck
Price: $7.95
MSRP: $9.95 (save 20%)
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Extreme PSI License Plate Frame
Extreme PSI License Plate Frame
Price: $2.95
MSRP: $3.99 (save 26%)
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Extreme PSI . com Decal: Version 2
Extreme PSI . com Decal: Version 2
Price: $0.50
MSRP: $1.00 (save 50%)
Ships in 24 hours