VintageCB750 Motorcycle Blog

If you’re into vintage bikes — especially classic Japanese iron — you’ve probably heard the name Honda CB750. Born in 1969, the CB750 forever changed the motorcycle world: it’s widely considered the first superbike.

But here’s the catch: "CB750" isn’t just one bike. It’s a family of models — “K,” “F,” “A,” “C,” even “SC” — each with its own flavor, strengths, and quirks. So before you jump on eBay or browse listings, let’s take a seat (with helmet on), grab a fuel‑stained coffee mug, and ride through CB750 history. By the end, you’ll know which CB variant fits your vibe (and your wallet).

The “K” Series – Original, Pure, Classic

What is “K”?

• The original CB750 debuted in 1969; early bikes are often called “K0.” Some purists argue “K0” was never official — early Honda paperwork just says “CB750.” 

• From 1971 onward, Honda formalized a “K‑series” naming convention: CB750 K1, K2, up through K8 by 1978. 

What you get

• The classic that made CB750 legendary. 

• The typical 4‑into‑4 exhaust (on early models), wire‑spoke wheels — that “vintage bike” look. 

• A raw, riding experience: cable throttles (on earliest runs), classic instrumentation, standard brakes (front disc, rear drum). 

Why you might love a "K" Model

• It’s history you can ride. If you’re a purist or collecting, “K” is the OG CB750 — the one that started it all.

• Simplicity and authenticity. Fewer mods, fewer compromises, easier to respect and restore.

• Great entry point for classic‑bike fans or first‑time restorers.

 Best for: Someone who loves vintage authenticity, wants the original “superbike” vibe, or is building a collector’s‑grade bike.

The “F” Series – Sporty, Café‑Inspired, Fun

What is “F”?

• The “F” stands for “Supersport.” The first CB750F appeared around 1975, alongside later Ks. 

• The F‑models were styled a bit more “sporty” or café‑racer-ish compared to the standard K.

What’s different under the seat and under the tank

• F models often came with 4‑into‑1 exhaust — more compact, more aggressive look.

• Some F‑variants upgraded to rear disc brakes instead of drum — better stopping power.

• Slight differences in ergonomics and styling: seats, tail‑sections or side‑panels reflect a sportier intent.

Why you might love an "F" Model

• Sporty look + vintage soul: café‑racer vibe with classic CB750 heart.

• Slightly better brakes and maybe marginally lighter components: nicer for twisty roads or spirited rides.

• Often more affordable than pristine K‑bike classics — good “bang for buck” classic‑bike vibe without paying premium collector’s prices.

Best for: Riders who want a fun, usable vintage motorcycle — nostalgic but a bit more modern in feel than a museum‑piece K.

The “A” Series – Yes, Automatic. A Bit Weird.

What is “A”?

• The “A” stands for “Automatic” or "Hondamatic" — yes, that’s right, some CB750s were sold with a two‑speed automatic transmission using a torque converter. 

• Mostly sold in Canada (and some export markets) around mid‑1970s (around 1975 onward).

What’s the trade‑off

• You get convenience: no manual clutch or shifting — might appeal if you’re more comfortable with auto or want a relaxed ride.

• But automatic transmission and torque converter add weight, reduce “classic bike feel,” and may feel odd compared to the manual sibling.

• Among collectors and purists, “A” models tend to draw fewer hearts — but for someone wanting easy, nostalgic commuting or an easy‑going classic ride, they have appeal.

Best for: Someone who loves vintage CB750 aesthetics but wants a lower‑effort riding experience — maybe a cruiser for easy Sunday rides or casual vintage‑bike outings.

What About “C” and “SC”? (Later Era & “Custom/Nighthawk” Lines)

CB750C

CB750SC

The history of CB750 doesn't stop in the ’70s. The name carries on in various forms — more modern, more subdued, and often designed for practicality rather than vintage purism.

What Are “C” and “SC”?

• The CB750’s life didn’t end with the ’70s — after the original SOHC “Four” run (1969–1978) came a long line of DOHC-based CB750s and successor models.

• “C” generally refers to “Custom”-style CB750 variants built after the original Four-era. Over time, Honda used the CB750 name in different forms, evolving the bike to suit changing market tastes and regulations. 

• “SC” — often best recognized as the Nighthawk 750 — is perhaps the most famous late‑generation CB750. The Honda CB750SC Nighthawk appeared around 1982. It uses a DOHC inline‑four, different frame/chassis design and updated components compared to the 1970s Four.

In short — “C/SC” are CB750s reborn for a different era: less vintage‑purist, more about everyday riding, reliability, and practicality.

So Which One Is Right for You?

Here’s a quick “choose‑your‑adventure”:

My Recommendation (If I Were You)

Honestly? You can’t really go wrong — it just depends on your vibe and budget.

If you want vintage style with a bit more sport, the F-series is a solid choice. It’s often lighter on the wallet and has café-racer DNA — great for twisty roads or a first vintage project that’s more ride than wrench.

If you're dreaming of garage art that rumbles to life on weekends, the early K-series is your holy grail. It's the OG CB750 — a true collector’s piece with that unmistakable four-into-four growl and pure 1970s soul.

If you're all about ease and chill, don’t sleep on the A-series Hondamatic. Quirky? Sure. But also rare, smooth, and surprisingly enjoyable — especially if you're cruising, not racing, or just want something different.

Want something with CB750 heritage but more modern manners? That’s where the C and SC models shine. The C-series brings in custom styling touches, while the SC (Nighthawk) is all about practical riding — smoother DOHC engine, easier maintenance, and comfort without sacrificing classic four-cylinder charm.

So yeah —
K for classic,
F for fun,
A for chill,
C for custom looks,
SC for daily rideability.

Take your pick — the CB750 family doesn’t really have a wrong answer. Just the right one for your kind of ride.