Classic and Classy Motorcycles Ltd

Vintage and Classic Motorcycle Importers

1970s Suzuki GT550 “Indy” Valuation Report

Date: August 2025

Historical Overview

The Suzuki GT550 (“Indy”) was introduced in 1972 as the mid-range model in Suzuki’s air-cooled three-cylinder two-stroke line-up. It offered improved brakes, performance, and styling over the GT380 (Sebring), while offering many of the GT750 (Le Mans) features in a lighter, more agile package. UK buyers now prize well-presented or restored examples, and early models with "easy-start" and dual discs are especially collectible.

UK Valuation Summary (by condition; splitting early vs later)

Condition	Early Models (1972–1973)	Later Models (1974–1977)	Example External Source (non-link reference)
Project / Restoration Non-running or incomplete.	£2,500 – £3,500	£2,000 – £3,000	Hagerty valuation range: £2k (restoration) to £9k excellent condition.
Roadworthy / Presentable Running examples, tidy condition.	£4,800 – £6,000	£4,000 – £5,200	Historics – 1972 GT550 sold for £4,816; Manor Park – 1972 GT550 sold for £6,750.
Restored / Excellent High quality restoration with paperwork.	£7,000 – £8,500	£6,000 – £7,500	H&H Classics – 1976 GT550 sold for £6,210 (restored).

Notes: Early models (1972–’73) command a premium due to dual brakes and “Indy” trim. Later examples, while similar mechanically, tend to be slightly less desirable. Project pricing is conservative, based on repair-ready listings and valuations.

Value Influencing Factors

Braking spec & trim: Dual front discs and “easy start” are valued features of early models.
Originality: Matching numbers, tank decals, and period paint make a difference in restored examples.
Condition: Sound two-stroke running (top-end health, carb tuning) is key in rider-condition pricing.
Documentation: V5C history, receipts, restoration records add confidence.
Market demand: Mid-size two-stroke collectors value the GT550 for balance of style and usability.

Conclusion

In the UK, early GT550 “Indy” machines trade around £4.8k–£6k in rider condition and up to ~£8.5k restored. Later models sit slightly lower. Project items start around ~£2.5k depending on condition. These values reflect the 2025 UK auction landscape.

Sources (non-link references):
Historics – 1972 GT550 sold for £4,816 (Nov 2023);
Manor Park Classics – 1972 GT550 sold for £6,750 (May 2025);
H&H Classics – 1976 GT550 restored for £6,210 (Dec 2022);
Hagerty valuation – price range restoration to excellent condition £2k–£9k (UK inference).