About the Yamaha XS1100
Standard XS1100, XS1100S Special and Midnight Special parts, with the carburetor and chassis differences explained.
The XS1100 took Yamaha into the over-1,000 cc road-bike class with an air-cooled DOHC inline four and shaft final drive. Yamaha also supplied different equipment for different markets. The standard XS1100, XS1100S Special and Midnight Special groups should therefore stay distinct when comparing controls, brakes and suspension.
XS1100 carburetor kits: 1978–1979 versus 1980–1981
The early kit covers standard XS1100 1978–1979 and XS1100S 1979. The later kit covers standard and Special 1980–1981. The Midnight Special float needle and seat has its own application. For suspension and brake work, use the full model designation: standard fork-seal coverage does not establish Special or Midnight fitment.
Know your XS1100 before choosing partsXS1100 model and repair differences
Separate standard, Special and Midnight Special before comparing carburetor or chassis parts.
Standard XS1100
1978–1981 selected coverage
The early carb kit covers 1978–1979, while the later example covers 1980–1981. The standard fork-seal listing must not be carried over to a Special.
Parts checkpoint: Match year and fitted carburetor bank.
XS1100S Special
1979–1981 selected coverage
The Special has separate chassis applications. Its featured gasket set stops at 1980 even though other listed parts continue through 1981.
Parts checkpoint: Check the year on every item in a larger order.
Midnight Special
XS1100LG catalog group
The group includes 1980–1981 entries, but the selected caliper kits separate 1980 from 1981. A shared float-valve listing does not erase that difference.
Parts checkpoint: Keep the full factory model code and brake position.
Identify your motorcycle before orderingXS1100 identification checklist
Record the model year, full factory code and installed components. Use the matching factory documentation to check frame and engine numbers.
Record the complete identity
Use the frame identification, model year and market to distinguish standard, Special and Midnight Special. Keep the engine number as a separate record.
Compare the carburetor bank
Check its identification and fitted float-valve components against the exact year application. Do not choose a kit only by engine displacement.
Identify brake and fork assemblies
Record the brake wheel position and component markings. Measure replacement forks or calipers rather than assuming the original equipment remains installed.
Contact PartsNMore with the model year, complete model code and clear photographs of the relevant markings and component.