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ISR Performance
ISR Performance delivers high-quality aftermarket parts that enhance your vehicle's performance and style. From exhaust systems to turbo kits, ISR Performance offers a range of products designed to boost horsepower and improve handling. Upgrade your ride with ISR Performance components and experience the thrill of superior engineering and craftsmanship on the road or track. With ISR Performance, you're not just modifying your car; you're transforming it into a true performance machine.
Newest Products for

ISR Performance
$115.00
$103.50
ISR Performance o2 Harness Extension Nissan VQ35DE 350Z | Infiniti G35 2003-2004
#IS-VQ35O2-EXT
Free Shipping

ISR Performance
$825.00
$742.50
ISR Performance Series II MBSE Resonated Catback Exhaust System BMW E46 Late 325 | 330
#IS-S2MBSER-E46-L
Free Shipping

ISR Performance
$825.00
$742.50
ISR Performance Series II MBSE Resonated Catback Exhaust System BMW E46 Early 323 | 328
#IS-S2MBSER-E46-E
Free Shipping

ISR Performance
$750.00
$675.00
ISR Performance Series II EP Dual Resonated Catback Exhaust System BMW E46 Late 325 | 330
#IS-S2EPDR-E46-L
Other Products for
In Stock Free Shipping

ISR Performance
$325.00
$292.50
ISR Front Mount Intercooler Piping Kit Front Facing Intake Only Nissan RB25DET
#IS-RB25ICPIPEKIT
Hurry Low Stock

ISR Performance
$55.00
$49.50
ISR Performance (Individual) 4/5x114.3 Bolt Pattern 66.1mm Bore 20mm Thick Wheel Spacers
#IS-451143-20
In Stock

ISR Performance
$5.00
$4.50
ISR Performance (individual) Injector Connector Pigtail - Jetronic
#IS-INJC-JT
In Stock Free Shipping

ISR Performance
$165.00
$148.50
ISR Performance - High Flow Cat Nissan 240sx S13 S14 1989-1998
#IS-HFC-240
In Stock

ISR Performance
$15.00
$13.50
ISR Performance -6an High Pressure Power Steering line fitting w/o O ring (Pump Fitting) Nissan 240sx
#IS-3060616
In Stock

ISR Performance
$10.00
$9.00
ISR Performance -6an High Pressure Power steering line fitting with o-ring Nissan 240sx
#IS-185004
In Stock Free Shipping

ISR Performance
$700.00
$630.00
ISR Performance 1 3/4" HGC LS Swap Header Nissan 240sx 1989-1998
#IS-SSHD-240LS
In Stock Free Shipping

ISR Performance
$825.00
$742.50
ISR Performance 1 3/4" HGC LS Swap Header Nissan 350Z 2003-2008
#IS-SSHD-350LS
In Stock

ISR Performance
$25.00
$22.50
ISR Performance 2.00-2.25" 90 Degree Black Silicone Coupler
#IS-90200225
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