1990 Honda NX650 0.6L Petrol · G354 KDT

The most recent MOT on 14 July 2026 was passed with no recorded defects, indicating that the immediate safety‑critical items were in acceptable condition at that time. However, the preceding two years show a mixed picture: in August 2024 the bike passed but carried several advisories, and a week earlier it failed due to a missing rear reflector, excessive front wheel‑bearing play, a non‑functional horn and the same chain‑guard omission that recurred. Earlier records reveal recurring rear‑brake‑pad wear, occasional front‑brake binding and a low‑level brake‑fluid warning. The pattern suggests that while the most recent inspection was clean, the vehicle has required intermittent corrective work, particularly on the braking system and wheel bearings, and the trend is not uniformly improving. At 43 500 mi the machine has logged an average of roughly 1 200 mi per year over its 36‑year life, a mileage well below typical usage for a 1990 model. Such low annual kilometres often imply long periods of storage or very light riding, which can be as detrimental as high mileage because rubber, hoses and seals deteriorate with age regardless of distance. The modest cumulative distance does mean that wear‑items such as tyres, clutch plates and chain sprockets may still be near original life, but age‑related hardening, cracking or corrosion is likely. Any sudden spikes in mileage between recorded tests are not evident, so the primary concern is calendar wear rather than mileage‑driven fatigue. Prospective buyers should give particular attention to the rear‑brake‑pad thickness and condition; the historic advisories indicate they were close to the minimum limit and have previously been below 1 mm, which can lead to reduced stopping performance and increased rotor wear. On a test ride listen for any pulsation or shudder when applying the rear brake and inspect the pads for uneven wear or glazing. The front wheel bearing, which has shown both slight and excessive play in recent years, should be checked for roughness or grinding when the wheel is spun and for any looseness when the wheel is rocked. Verify that the chain guard is fitted and intact, as its absence can allow debris to damage the chain and sprockets. Confirm that the horn operates correctly and that the rear reflector is present and securely mounted, since these are mandatory safety items. Finally, examine the brake‑fluid level and condition; low fluid can indicate a leak or worn master cylinder seals, and old fluid may have absorbed moisture, reducing boiling point. Given the bike’s age and low utilisation, a thorough visual and tactile inspection of age‑sensitive components is essential. Check all tyre sidewalls for cracking, dry rot or hardening, and measure tread depth; even with low miles, tyres older than ten years should be replaced. Inspect the 12 V battery for sulphation, low cranking voltage and swollen cells, as prolonged storage can diminish capacity. Examine the fuel tank, carburettor jets and fuel lines for varnish or microbial growth, and consider a complete fuel‑system cleaning. Review the service book for evidence of regular oil changes, valve‑clearance adjustments and coolant (if applicable) replacement, and be prepared for a full fluid refresh—engine oil, brake fluid, coolant (if fitted) and chain lubrication—since fluids degrade over time even when the bike sits idle. Addressing these points will give a realistic picture of the motorcycle’s mechanical health and the likely cost of bringing it to a reliable, road‑worthy condition.