Classic and Classy Motorcycles Ltd

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1980s Kawasaki GPZ900R Valuation Report

Date: November 2025

Historical Overview

Kawasaki’s GPZ900R (ZX900A, launched 1984) reset superbike benchmarks with its liquid-cooled, 16-valve inline four and real-world 150 mph performance. In the UK, clean, original bikes with paperwork remain in steady demand. Values are driven primarily by condition, originality, mileage and documentation rather than a specific year, though early A1/A2 bikes and correctly presented examples can draw extra interest.

UK Valuation Summary (by condition)

Condition	Estimated Value (GBP)	Evidence (UK — Sold vs Asking)
Project / Restoration Non-runner or off the road; recommission needed; cosmetics tired.	£800 – £1,500	Sold: 1985 GPZ900, WB & Sons, hammer £1,635 (guide £1,500–£2,000). Sold: 1985 GPZ900R, H&H Classics, hammer £1,840 (incl. premium). Asking: UK projects frequently listed around £1,200–£1,800 depending on completeness.
Roadworthy / Presentable Running and usable; fair cosmetics; MOT present or recent.	£1,900 – £3,000	Sold: 1984 GPZ900R A1 (Top Gun-style, tidy), Manor Park Classics, sold £3,508 (Oct 2023). Sold: 1989 GPZ900R, H&H Classics (NMM sale), sold £4,370 (Mar 2025) for a notably strong original example. Asking: Typical UK classifieds £2,200–£3,500 for tidy riders; exceptional originality commands more.
Restored / Excellent High-quality restoration or very original low-mile survivor; strong history file.	£3,200 – £4,800	Sold (upper reference): Strong original 1989 example achieved £4,370 (H&H, Mar 2025). Asking: UK dealers/private sellers commonly advertise the best examples at £3,500–£5,000+ depending on provenance and mileage. Note: Above ~£4.5k requires exceptional originality or restoration quality with documentation.

Notes: Original paintwork, correct decals, standard exhausts, factory airbox and tidy fairings support higher results. Aftermarket paint schemes, non-standard 4-into-1 pipes and missing trims usually soften bids. A comprehensive history file (V5C, invoices, MOTs) is a key value driver in the UK.

Value Influencing Factors

Originality: OEM panels and exhausts carry a clear premium over modified bikes.
Condition: Stored projects vary widely; running, usable examples perform best.
Documentation: Matching numbers, UK registration, and long-term history help significantly.
Timing: Spring/summer auctions and event weekends (Stafford/NEC) tend to realise stronger prices.

Conclusion

In the UK as of November 2025, projects for the GPZ900R typically sit at £800–£1,500. Roadworthy/presentable examples commonly achieve £1,900–£3,000, with tidy or particularly original bikes occasionally exceeding this. Restored/excellent machines are most often seen at £3,200–£4,800, with only the cleanest, best-documented examples pushing beyond the upper band.

Sources (plain text, UK-focused):
WB & Sons — 1985 Kawasaki GPZ900, sold for £1,635 (guide £1,500–£2,000).
H&H Classics — 1985 Kawasaki GPZ900R, sold for £1,840 (including premium).
Manor Park Classics — 1984 Kawasaki GPZ900R A1, sold for £3,508 (Oct 2023).
H&H Classics (National Motorcycle Museum sale) — 1989 Kawasaki GPZ900R, sold for £4,370 (Mar 26, 2025).
Car & Classic UK — typical late-2025 asking levels for tidy riders ~£2,200–£3,500; higher asks for excellent/restored.

All Valuations

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