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Slip-In Mufflers
- 4'' Sidetube Slip-In Mufflers
- Big Block Reverse Flow
- Long Lasting
- Easily Removed For Racing
- Quieter Than Glasspack
- High Level Of Sound Control
- Will Not Restrict Engine Efficiency
Manufactured using lightweight mandrel bent 18-gauge tubing, Super Competition Sidemount Headers offer the most aggressive style and performance for your 1963-82 Corvette! Testing on a 1968 Corvette with a 427 engine, Sidemount Headers, Side Pipe Tubes, and Maximum Flow Slip-In Mufflers produced an increase of 40 horsepower and 20 ft/lbs of torque (more than undercar exhaust with turbo mufflers).
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Features- Designed for optimal performance
- Tuned-length primary tubes for maximum exhaust scavenging and velocity
- Lightweight yet sturdy 18-gauge tubing mandrel bent for smooth exhaust flow
- Long transition collector for decreased backpressure
- 5/16'' machined flanges for a perfect seal
- Industry's best welds for durability
- Slip-fit side tubes for leak-free seal
- All necessary hardware included for a complete installation
- Replacement Hooker Mufflers available in a straight-through, glasspack or reverse-flow version
- Available in five finishes to suit your needs (see listings below for product availability) -
Black Painted(Part numbers do not have a suffix)
Chrome (Special Part numbers do not have suffix)
Metallic Ceramic Coating (Part numbers have a -1 suffix)
Stainless Steel (Part numbers have a -3 suffix)
Titanium Ceramic Coating (Part numbers have a -4 suffix)Note: All products sold in pairs
Part TypeMuffler
Product LineHooker Headers Super Competition Sidemount Headers and Accessories
BrandHOOKER HEADERS
Package Height4.0
Package Width9.5
Package Length36.0
Weight20.575 PG
Part CategoryPerformance Parts
Outlet Size4 in (101.6 mm)
PositionN/A
Inlet Connection TypeClamp On
QuantitySold as a pair
Overall LengthN/A
MaterialN/A
Inlet PositionOEM
Inlet TypeOEM
Inlet Size (In.)4
Exhaust Insert MaterialSteel
Body WidthN/A
Body LengthN/A
Muffler Count2
Outlet Connection TypePipe
Body HeightN/A
Outlet TypeOEM
Part FitmentSemi Universal
Outlet PositionOEM
Diameter4 in (101.6 mm)
Vendor Part Number21003HKR
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
