Kawasaki Z 250 (1976-1980) Review: The Feisty Twin That Defined Lightweight Thrills

Introduction

The Kawasaki Z 250 stands as a testament to an era when motorcycles didn't need complex electronics or eye-watering power figures to deliver pure riding joy. Produced between 1976 and 1980, this air-cooled parallel twin carved its niche as an accessible yet spirited machine for riders craving the Z-series' signature aggression in a compact package. Let's explore why this 250cc legend remains a cult favorite among vintage enthusiasts and daily riders alike.

Design & First Impressions

The Z 250 inherits the muscular styling DNA of its larger Z-series siblings, with a teardrop fuel tank, chrome accents, and that iconic "sugomi" stance that makes it look perpetually ready to pounce. While its 166 kg (366 lb) wet weight feels substantial at a standstill, the bike carries it low thanks to a slim midsection and narrow 33mm telescopic forks.

The cockpit is refreshingly simple - a single analog speedometer with built-in warning lights, rubber-mounted handlebars, and a flat saddle that accommodates both solo riding and occasional passengers. Chrome fenders and a ducktail rear end complete the retro charm. Modern riders might find the suspension basic (140ml of SAE 5W-20 oil in each fork leg), but it's precisely this mechanical simplicity that makes the Z 250 so approachable.

Engine & Performance

At its heart lies a 249cc air-cooled parallel twin that feels anything but humble. With a 15/35 sprocket combo driving its 98-link chain, the engine delivers 27 PS (20 kW) at 9,500 RPM - numbers that still feel punchy by today's 250cc standards. The powerband is classic UJM (Universal Japanese Motorcycle):

• Low-end: Manageable torque for city commuting
• Mid-range: 5,000-8,000 RPM is where the twin comes alive with a metallic snarl
• Top-end: Power tapers off after 9,500 RPM, but hitting the 10,500 RPM redline is addictively visceral

The twin Mikuni carburetors (set at 1.75 turns out on the air screw) require careful tuning but reward with crisp throttle response. Maintaining the specified valve clearances (0.17-0.22mm cold for both intake and exhaust) is crucial to prevent the valve train clatter that plagued neglected examples.

Handling & Ride Experience

Fire up the engine through its kickstarter (no electric start here), and the 1,250 ±100 RPM idle settles into a lumpy rhythm that vibrates through the rubber pegs. Once moving, the vibrations smooth out into a pleasant buzz that adds character without numbing your hands.

The 33mm front forks and twin shock rear suspension handle moderate bumps competently, though sharp edges will have you scanning the road. Tire pressures matter more than usual here - stick to Kawasaki's recommended 1.8 bar (26 psi) front and 2.0 bar (29 psi) rear for optimal grip from the period-correct tires.

Where the Z 250 truly shines is in cornering. The 140mm front fork travel and 18" wheels make for quick direction changes, while the 1,345mm wheelbase keeps things stable at speed. Braking is period-typical - the single 250mm front drum requires a firm pull, but the 15mm master cylinder offers decent modulation once you adapt to its wooden feel.

Competition

The late-70s 250cc class was fiercely contested. Here's how the Z 250 stacked up:

1. Honda CB250RS (1978-1983):
2. Single-cylinder 4-stroke (23 PS)
3. Lighter at 128 kg (282 lb)
4. Superior fuel economy (9.3L vs Z's 13.5L tank)

5. Less exciting power delivery, better for beginners

6. Yamaha RD250 (1973-1979):

7. 247cc two-stroke twin (30 PS)
8. Faster acceleration but higher maintenance
9. Smoother disc brake (from 1976)

10. Required premix fueling (no oil injection)

11. Suzuki GT250 (1976-1977):

12. Two-stroke parallel twin (32 PS)
13. Ram-air cooling system
14. Heavier at 158 kg (348 lb)
15. More peaky powerband

The Z 250's sweet spot was combining approachable four-stroke reliability with enough performance to shame most two-strokes. While not the fastest in a straight line, its balanced chassis made it a favorite for canyon carving.

Maintenance

As MOTOPARTS.store's in-house expert, here's what every Z 250 owner should know:

Oil System:
- Capacity: 1.5L (1.6 qt) without filter, 1.8L (1.9 qt) with
- Use SAE 20W-40 mineral oil - modern synthetics can cause clutch slip
- Change every 3,000 km (1,864 mi) given the engine's splash lubrication

Valve Adjustments:
- Check every 5,000 km (3,107 mi)
- Cold clearance: 0.17-0.22mm (0.0067-0.0087") for both intake/exhaust
- Requires 8mm feeler gauge and locknut wrench

Carburetion:
- Clean pilot jets annually
- Air screw baseline: 1.75 turns out
- Sync carbs using vacuum gauges every 10,000 km

Electrics:
- NGK DR8ES plugs (0.7mm gap) for standard use
- Upgrade to DR8EIX iridium plugs for colder climates
- Points ignition needs cleaning every 3,000 km

Brakes:
- Drum brake: Use non-asbestos shoes
- Check brake fluid (DOT 4) annually if later disc models
- Adjust rear brake rod tension monthly

Chain Care:
- 15T front /35T rear sprocket combo
- 98-link chain (standard 530 pitch)
- Lubricate every 500 km (311 mi) with 80W-90 gear oil

Stock up on our Kawasaki Z 250 maintenance kits featuring NGK spark plugs, K&N oil filters, and DID chains for hassle-free ownership.

Ownership Experience

Living with a Z 250 in 2024 is surprisingly practical. The 13.5L (3.57 gal) tank delivers 250-300 km (155-186 mi) ranges, while parts availability remains excellent thanks to shared components with the Z400. Common upgrades include:

• Progressive fork springs ($89) to reduce brake dive
• LED headlight conversions ($45) for night visibility
• Mikuni VM30 carburetors ($299/pair) for smoother response
• Our MOTOPARTS.store cafe racer seat kit ($175) for solo riding

The air-cooled engine runs hot in traffic - consider adding an oil cooler kit ($220) for tropical climates. Rust-prone areas are the chrome fenders and exhaust headers - our ceramic coating service ($150) adds years of protection.

Conclusion

The Kawasaki Z 250 remains one of the most rewarding vintage motorcycles to own today. Its mechanical simplicity makes it an ideal project bike, while the eager twin-cylinder engine delivers smiles that modern singles can't match. Whether you're hunting for a classic commuter or a blank slate for customization, this 1970s legend continues to prove that less really can be more - especially when "less" comes with 27 horsepower of twin-cylinder charisma.

Visit MOTOPARTS.store for genuine Kawasaki Z 250 parts, performance upgrades, and expert maintenance kits. Let us help you keep your Z roaring into another decade!

---

Specifications sheet

---