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3674 1 3/8" Full Merged with Fat Boy Quiet Muffler
3674 1 3/8" Full Merged with Fat Boy Quiet Muffler
 
List Price: $469.95
Your Price: $405.95
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Product Code: 3674
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Description
 
The latest in our line-up of Full Merged Exhaust Systems. The New 1 3/8" Full Merged Exhaust System was designed for smaller engines running smaller valves and smaller exhaust ports.

This is the same Exhaust System run on the CB/Hot VW's Project Mileage Motor that produced 92hp on the Dyno! You can see the Hot VW's Project Mileage Motor Build Story in our Featured Articles section.
Fits Type-1 Beetle.

CB Recommends:
#3674 (1 3/8") Stock to 90HP
#3660 (1 1/2") 90HP to 140HP
#3658 (1 5/8") 140HP to 175HP
#3664 (1 3/4") 175HP to 220HP
#3668 (1 7/8") 220HP to 260HP
#3669 ( 2" ) 260HP & greater
Features
  • 1 3/8" mandrel bent - 18 gauge steel - equal length header
  • Full merged collector - small flange (2 1/4" bolt pattern - 1 5/8" center hole)
  • Chambered 'Fat Boy' quiet muffler - double wall - reinforced attaching tab
  • J-Tubes bolt directly to cylinder heads - eliminates heavy heater boxes
  • Header/ muffler are unpainted "raw" steel

Accessory Parts
3686 Small Three Bolt Gasket - 2 1/4 Inch Bolt Pattern 3640 Copper Exhaust Gasket - Small 3 Bolt Flange 2800 Graphite Compression Gaskets - 1 5/16" Stock Exhaust (set of 4) Torque to 10 - 12 ft. lbs 2804 Graphite Compression Gasket - Small Three Bolt Gasket - 2 1/4" Bolt Pattern (each) Torque to 12 - 16 ft. lbs
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3686 Small Three Bolt Gasket - 2 1/4 Inch Bolt Pattern 3640 Copper Exhaust Gasket - Small 3 Bolt Flange 2800 Graphite Compression Gaskets - 1 5/16" Stock Exhaust (set of 4) Torque to 10 - 12 ft. lbs 2804 Graphite Compression Gasket - Small Three Bolt Gasket - 2 1/4" Bolt Pattern (each) Torque to 12 - 16 ft. lbs

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