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Hooker BlackHeart UEL Header Without Cat

2013-2020 Scion FR-S/Toyota 86/Subaru BRZ H4, 2.0L 1-5/8 UEL (Unequal Length) Header W/O Cat

PART# 70304301-RHKR

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WARNING: This product is not street legal and may only be used on Racing Vehicles. Racing Vehicles must be used exclusively for racing or other forms of competition. Racing vehicles must not be registered and must never be used on the street. It is illegal to install this product on a registered vehicle and use it on the street.


Hooker continues to push the boundaries of performance with the new Blackheart line of performance exhaust systems for popular late model vehicles. The Blackheart line is truly a platform designed full exhaust program. From the cylinder head flange to the tailpipe, the Blackheart line is engineered to provide maximum exhaust velocity, ground clearance, style, performance, and quality!


  • Max dyno gains of +5.17 HP & +7.83 LB.FT torque (w/ UEL header w/o cat) and max dyno gains of +6.6 HP & +10.1 LB.FT torque (w/ Header w/ cat) Note: This is a stock tune
  • Constructed from 1 5/8” diameter, lightweight 18-gauge, 304 stainless steel primary tubes into 2 ½” diameter outlet tube maximizing performance, strength and durability
  • Up to 52% weight savings over OE header manifold, a saving of 11 LBS. (UEL header w/o cat) and 8 LBS. (Header w/ cat)
  • Available in a UEL (Unequal length) header without cat or a near equal length header with cat design
  • UEL (Unequal length) header w/o cat design includes an O2 extension wire and an O2 bung plug
  • Quality welds for strength, longevity, and good looks
  • Utilizes factory mounting points for ease of installation
  • Tube geometry designed for maximum ground clearance and hassle free installation
  • Manufacturer’s limited lifetime warranty


Application2013-2020 Scion FR-S/Subaru BRZ
BrandHooker BlackHeart
Emission Code4
Exhaust SeriesHooker BlackHeart
Header StyleLong Tube
Material304 Stainless Steel
Primary Tube Dia.1-5/8 inch
Product TypeHeaders
Race OnlyYes
Part Number70304301-RHKR



This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

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