Thunderheader Black X-Series Exhaust System – 1073XB
Thunderheader™ X-Series™ 2-into 1 exhaust systems for Touring models is our large diameter exhaust specifically designed for big cubic inch engines, built to produce big numbers
The X-Series™ is designed with 2 in. primary tubes with a 12-degree transition chamber to allow more exhaust flow
Unique patented baffle in conjunction with the trademark tail cone is designed to allow a free-flowing exhaust while creating an anti-reversion condition in the pipe which will aid the air/fuel flow on the intake stroke to allow more fuel into the combustion chamber
This means more torque at the low and mid RPM ranges and maximum horsepower at top end
Complete with heat shields and all mounting hardware, and 12mm O2 sensor bungs
O2 sensor ports are pre-installed with O2 sensor plugs
Included Items:
(1) Chrome steel 2 into 1 header assembly W/black steel heat shields installed
(1) Black steel muffler assembly
(1) Black steel muffler heat shield
(11) Small black hose clamps
(2) Large black hose clamps
(1) Band clamp
(1) 5/16″-18 x 1/2″ Hex head bolt
(3) 5/16″ Flat washers
(1) 5/16″-18 x 3/4″ Hex head bolt
(1) 5/16″-18 Nylock nut
(1) 5/16″-18 Hex nut
(1) Black steel mounting bracket
(1) Black steel square spacer
(2) Black aluminum round spacers
(1) 3/8″-16 s 3″ Socket cap head bolt
(2) 3/8″-16 x 1-3/4″ Socket cap head bolts
Specifications
Color Black
Mfg #: 1073XB
Part #: 4409870
Style Tapered Tip
Type 2-Into-1 System
Units Each
Weight 31.25 lbs
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