2-into-1 Systems

Thunderheader #1028 ALL MODELS Forward or Center Controls. No O2 Sensor Ports. - Chrome - 04-06 Sportster

Thunderheader #1028B ALL MODELS Forward or Center Controls. No O2 Sensor Ports. - Black - 04-06 Sportster

Thunderheader #1039 Fits all models (excluding Switchback). 18mm & 12mm O2 Sensor Ports. - Chrome - 06-17 Dyna

Thunderheader #1039B Fits all models. 18mm & 12mm O2 Sensor Ports. - Black - 06-17 Dyna

Thunderheader #1054S 2-INTO-1 Standard Length (Right Side Only) - Includes Full Coverage Heat Shields. 18mm O2 Sensors. - Chrome - 07-08 Touring

Thunderheader #1054SB 2-INTO-1 Standard Length (Right Side Only) - Includes Full Coverage Heat Shields. 18mm O2 Sensor Ports. - Black - 07-08 Touring

Thunderheader #1057 All SOFTAIL models. 18mm O2 Sensors. - Chrome - 07-11 Softail

Thunderheader #1057B All SOFTAIL models. 18mm O2 Sensors. - Black - 07-11 Softail

Thunderheader #1058 ALL MODELS Forward or Center controls. 18mm O2 Sensors. - Chrome - 07-13 Sportster

Thunderheader #1058B ALL MODELS Forward or Center controls. 18mm O2 Sensors. - Black - 07-13 Sportster

Thunderheader #1059 ALL MODELS Forward or Center controls. 12mm O2 Sensors. - Chrome - 14-21 Sportster

Thunderheader #1059B ALL MODELS Forward or Center controls. 12mm O2 Sensors. - Black - 14-21 Sportster

Thunderheader #1064S 2-INTO-1 Standard Length (Right Side Only) - Includes Full Coverage Heat Shields. 18mm O2 Sensor Ports. - Chrome - 209 Touring

Thunderheader #1064SB 2-INTO-1 Standard Length (Right Side Only) - Includes Full Coverage Heat Shields. 18mm O2 Sensor Ports. - Black - 209 Touring

Thunderheader #1067 All SOFTAIL models, including BREAKOUT?. 12mm O2 Sensors. - Chrome - 12-17 Softail

Thunderheader #1067B All SOFTAIL models (202-16), including BREAKOUT?. 12mm O2 Sensors. - Black - 12-17 Softail

Thunderheader #1073X - X-SERIES EXHAUST SYSTEM FOR M8 - Includes Full Coverage Heat Shields, 12mm & 18mm O2 Sensor Ports - CHROME - 17-24 Touring Models

Thunderheader #1073XB - X-SERIES EXHAUST FOR M8 - Includes Full Coverage Heat Shields, 12mm & 18mm O2 Sensor Ports - BLACK - 17-24 Touring Models

Thunderheader #1074S 2-INTO-1 Standard Length (Right Side Only) - Includes Full Coverage Heat Shields. 12mm O2 Sensors. - Chrome - 10-16 Touring

Thunderheader #1074SB 2-INTO-1 Standard Length (Right Side Only) - Includes Full Coverage Heat Shields. 12mm O2 Sensor Ports. - Black - 10-16 Touring

Thunderheader #1074X - X-SERIES EXHAUST FOR BIG CUBIC INCH ENGINES - Includes Full Coverage Heat Shields - CHROME - 84-16 Touring Models

Thunderheader #1074X X-SERIES EXHAUST FOR BIG CUBIC INCH ENGINES - Includes Full Coverage Heat Shields.12mm & 18mm O2 Sensor Ports - Chrome - 84-16 Touring

Thunderheader #1074XB - X-SERIES EXHAUST FOR BIG CUBIC INCH ENGINES - Includes Full Coverage Heat Shields, 12mm & 18mm O2 Sensor Ports - BLACK - 84-16 Touring Models

Thunderheader #1360X - X-SERIES "HIGH PIPE" with Heat Shields, 12mm & 18mm O2 Sensor Ports - Fits Slim & Low Rider (1361X - BREAKOUT) (1362X - Street Bob) - CHROME - M8 Softail

Thunderheader #1360XB - X-SERIES "HIGH PIPE" with Heat Shields, 12mm & 18mm O2 Sensor Ports - Fits Slim & Low Rider (1361XB - BREAKOUT) (1362XB - Street Bob) - BLACK - M8 Softail