2005–2006 · Naked Bike · Buyer's Guide
Naked Muscle, Fairing Added
Kawasaki took the 748 cc inline-four out of the Z750 family, put a small upper fairing and a taller screen in front of it, and left the rest alone. That is the whole idea. You get 110 hp at 10,750 rpm, 55 lb-ft at 8,200 rpm, a six-speed box, chain drive, and no electronics whatsoever: no ABS, no traction control, no ride modes. In its class it sits with riders who wanted naked-bike attitude without eating full wind pressure for two hours on the way out to the good roads.
It rides like a bike built by people who weren't trying to prove anything. 483 lb wet with a 32.1 in seat puts it in ordinary territory for an average-height rider, and nothing about the controls asks for special handling. It ages well where it counts and badly where you can see it. Engine case paint flakes off the crankcase and head, the stock silencer surface rusts, fork stanchions and the shock body spot up after a salted winter. The real caveat is suspension: the fork has no adjustment at all and the rear shock gives you preload to work with, so you set sag out back and live with what the fork does.
Spec sheets don't ride bikes, but they set the baseline.
| Power | 110 hp (81 kW) @ 10,750 rpm |
|---|---|
| Torque | 55 lb-ft (75 Nm) @ 8,200 rpm |
| Displacement | 748 cc |
| Engine | Inline-four |
| Cooling | Liquid-cooled |
| Gearbox | 6-speed |
| Final drive | Chain |
| Fork | Telescopic |
| Front brake | 300 mm |
| Front tire | 120/70-17 |
| Rear tire | 180/55-17 |
| Wheelbase | 56.3 in (1429 mm) |
| Seat height | 32.1 in (815 mm) |
| Wet weight | 483 lb (219 kg) |
| Fuel capacity | 4.8 gal (18 L) |
| Top speed | 138 mph (222 km/h) |
| Fuel economy | 35 mpg (US) |
Equipment check
Chassis
Two decades of paddock conversations, club-night talk, and messages from owners who write in directly. That is where this comes from. For the Z750S the chatter splits cleanly: riders talk about the engine and the chassis first, then spend just as long on the parts built down to a price.
The engine is what owners bring up first, and they describe it the same way every time: strong through the middle with no flat spot to ride around, and still pulling hard at the top. Riders stepping up from smaller fours say the difference is bigger than expected. Close behind is the chassis. Owners call it agile and neutral, quick to change direction, and settled enough to carve a good road without unsettling itself.
The recurring gripe is suspension. Riders describe the fork as too soft when pushed and the rear as harsh over bumps, jarring on anything but smooth pavement. Brakes come up almost as often: owners say the front feels underpowered for the bike's pace and needs cleaning through the winter to keep decent feel. After that it's the contact points. The seat goes painful after about an hour, and the mirrors show little enough that many owners fit aftermarket ones.
Fuel pump clogging and tank rust
Residues from fuel and internal tank corrosion can clog the fuel pump, leading to inconsistent fuel delivery and hard starting. Storing the bike with a full tank and using fuel stabilizer reduces risk.
Ignition coil failures
Cracked or corroded ignition coils can cause misfires, stumbling, or a no-start condition. Regular inspection and replacement of aged coils is advised.
Sensor failures on older machines
Various sensors (e.g., TPS, crank position) can fail as the bike ages, leading to running issues, but are easy to access and replace.
Loose fairing bolts and vibration-induced buzzing
The small fairing can develop an irritating buzz at highway speeds as its mounting bolts work loose over time. Applying thread locker and periodic tightening are necessary.
Radiator easily damaged due to exposed mounting
The radiator is quite exposed and vulnerable to stone damage, potentially causing coolant leaks or overheating.
Exhaust and suspension corrosion
The stock silencer is prone to surface rust, and fork stanchions/rear shock body can develop rust spots if not cleaned regularly, especially after winter riding.
Flaking paint on engine cases
The engine paint is very thin and tends to flake off over time, especially on the crankcase and cylinder head.
Where this Kawasaki Z 750S pulls ahead of — or falls behind — its rivals on the numbers, and the typical bike in its class on character.
Power
Torque
Displacement
Wet weight
Top speed
Seat height
Forget spec-sheet bragging. Here's who the Z 750S is actually built for.
For Angeles Crest weekends it has the legs and the ground clearance, and the fairing spares you on the freeway slog out of town. Accept that the suspension is basic and no ABS is backing you up.
Made for Angeles Crest Highway · Coronado Trail / US 191 · Highway 1 / Big Sur
On tight Appalachian roads it's willing and easy to place, and it rewards clean lines over brute speed. At 483 lb it wants a little more input than a small-bore bike does.
Made for Back of the Dragon · Blue Ridge Parkway · Cherohala Skyway
This is the sweet spot. Enough fairing for the long run out of Austin, enough motor for the Twisted Sisters, and running costs that leave the weekend budget intact.
Made for Austin / Texas Hill Country · Twisted Sisters · Austin / Handbuilt Motorcycle Show
If this one isn't quite the fit, these are the bikes worth riding back-to-back against it.
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