Classic and Classy Motorcycles Ltd

Historical Context

The 1973 Harley-Davidson XLCH 1000cc Sportster was the last of the truly raw, kickstart-only Ironheads before electric start became more widespread in the Sportster lineup. The XLCH, originally introduced in the late 1950s, was the high-performance version of the Sportster series—lighter, louder, and built with a rebellious streak. By 1973, the Ironhead engine had been bored to 1000cc, giving the bike more torque and stronger highway performance. This era of Sportster was tough, no-frills, and unmistakably Harley, retaining a direct mechanical feel that’s been gradually engineered out of modern bikes. The 1973 XLCH captured that last gasp of pure kickstart V-twin defiance before the mid-1970s brought major changes to the line.

Technical Specifications and Performance

• Year: 1973
• Make: Harley-Davidson
• Model: XLCH Sportster
• Engine Displacement: 997cc (61 cubic inches)
• Engine Type: Air-cooled OHV 45° V-twin (Ironhead)
• Compression Ratio: 9.0:1
• Carburetion: Tillotson or Bendix carburetor (varied by spec)
• Ignition System: Points ignition
• Transmission Type: 4-speed manual
• Final Drive: Chain
• Cooling System: Air-cooled
• Fuel Capacity: Approx. 3.2 gallons
• Braking System: Drum front and rear (disc front introduced mid-1973)
• Dry Weight: Approx. 495 lbs
• Top Speed: Around 110 mph

Technical Advancements

While the 1973 XLCH still ran points ignition and a kickstart-only setup, it benefitted from increased engine displacement, moving up to 1000cc from the earlier 900cc versions. Harley also introduced optional front disc brakes partway through the year, giving improved stopping power over the aging drum system. The frame and suspension were still very much old-school—stiff, raw, and minimal—but that was exactly what many riders wanted from the XLCH. These bikes had character, and every ride felt like a personal accomplishment, especially if you started it on the first kick.

Evolution of the Model

The XLCH was the performance-focused, stripped-down sibling to the more touring-oriented XLH. It featured a peanut-style tank, chopped fenders, a higher compression ratio, and minimal accessories. Over the years, Harley gradually shifted away from kickstart-only bikes, but in 1973, the XLCH was still very much a purist's machine. The Ironhead engine design remained until 1985, but later versions had electric start and other refinements. This 1973 model is among the last to fully embrace the bare-knuckle ethos of Harley’s early Sportster lineup.

Competitors in the Market

In 1973, the XLCH competed with Japanese bikes like the Honda CB750 and Yamaha XS650, both of which offered more advanced engineering, electric start, and disc brakes. Still, the Harley delivered something they couldn’t—authentic American V-twin sound and feel. The XLCH wasn’t for everyone—it was heavy to kick, rough around the edges, and not especially forgiving—but it had soul. It appealed to riders who wanted a machine that didn’t just look tough but actually was.

Legacy and Appeal

As a barn find or restoration project, the 1973 XLCH 1000cc Sportster is a rewarding and character-rich classic. With its kickstart-only setup, rigid engine mounting, and mechanical simplicity, it offers a raw and visceral riding experience that’s hard to replicate. These bikes have become increasingly collectible, particularly by those who appreciate vintage Harley-Davidsons that demand a bit of grit and know-how. Once restored, an XLCH offers old-school cool, real torque, and a soundtrack that never gets old.