Date: August 2025
The air-cooled Yamaha RD400 (1976–1979) evolved from the RD350, benefiting from improvements in power delivery and gearing to stay competitive until the switch to liquid-cooled models. It remains one of the most revered two-strokes among UK riders and collectors.
Condition | Estimated Value (GBP) | Example External Source |
---|---|---|
Project / Restoration Non-running or for-parts bikes. |
£2,500 – £3,500 | Dealer listings in UK classifieds trend from £2,200 to £3,000 for parts or incomplete machines. |
Roadworthy / Presentable Running examples with some age wear. |
£5,000 – £8,500 | Iconic Auctioneers – 1976 RD400 sold for £7,820 at NEC (Nov 2023); classified listings show £10–11k asking prices. |
Restored / Excellent Show-quality, matching numbers, strong documentation. |
£9,000 – £12,000 | Car & Classic listings: GT examples with presentation reaching £10k+; rare specials reaching £14k (asking). |
Notes: The NEC auction result confirms the upper end of rider-quality values. Classified asking prices are higher but not verified, so they inform the top restored band rather than the middle rider range.
In today’s UK market, expect around £2.5k–£3.5k for project bikes, £5k–£8.5k for tidy riders, and up to £9k–£12k for high-end restorations. Exceptional examples with immaculate restoration or provenance may surpass this range.
Sources:
Iconic Auctioneers – 1976 RD400 sold for £7,820 (NEC, Nov 2023);
Car & Classic – classified RD400 listings around £10k–£10.995;
Manor Park Classics – 1976 RD400 auction estimate £5.5k–£6.5k (April 2024).