In the 1970s, Yamaha was one of the first brands to bridge the gap between trail bikes and competition-oriented motocrossers. The DT range was topped by the DT400, which was powered by a 397cc two-stroke, air-cooled single-cylinder engine with reed-valve induction and a distinctive radial cylinder head. The traditional suspension provided long travel, while the drum brakes worked well even in dusty or wet conditions.
 
This 1974 example was imported to the UK from the USA, and has matching frame and engine numbers. Recently, it was converted to a 12-volt electrical system, and a new headlight assembly and dip switch were fitted, along with electronic ignition for the engine. At the same time, the engine and fuel tank were flushed through, and rust removed from the fuel tank. Otherwise, it is highly original, and wears a pleasing patina throughout.
 
The motorcycle’s yellow fuel tank and side panel are bright, with period-correct decals. The seller states that the motorcycle “starts and runs well”. This is a fine example of a genre-defining ‘bike that is ready to provide a new owner with all-terrain enjoyment.
 

Most recent work:

05/26 – £1,252.78 – Slipstream M/C Repair & Restoration 2026 (Invoice #190)
 

 

BEFORE YOU BUY 

This sale is subject to the Car & Classic Terms and Conditions. By bidding and/or making an offer, you also agree to the following: 

✓ The seller is registered as a private seller which means consumer rights stemming from EU consumer protection law do not come into effect. However, you are still covered by Car & Classic’s own Terms and Conditions.. 

✓ We request that a non-refundable fee  be paid if you are the lucky winning bidder at auction or if your offer is accepted. Please refer to our helpful FAQs and T&Cs for specific rates. 

✓ This vehicle is “Sold As Seen”, on an “As Is Where Is’ basis and without warranty. Photos and descriptions are solely for guidance purposes and it's customary to carry out a full inspection of the vehicle prior to purchase for your own peace of mind. 

✓ VAT is included in the buyer's fee. VAT may or may not be included in the final bid or offer price, as specified in the listing. 

✓ We want a smooth transaction just as much as you do and as such we run all UK-registered cars and motorcycles for sale on Car & Classic through an online HPI check to verify that they show no insurance database markers for damage or theft, and have no finance owing, allowing you to bid with confidence. 

✓ We also check whether vehicles are recorded as being written off as part of an insurance total loss claim at the time an advert is placed on Car & Classic and we helpfully provide write-off category labels (Cat C/D/S/N) for your assistance. However, the presence or absence of a label does not guarantee the vehicle’s status and it is always worthwhile carrying out your own  full vehicle history check before making an offer on a vehicle. 

✓ Buyers are responsible for vehicle collection 

or delivery. Importing vehicles may result in additional customs duties and import taxes, so it's worth checking beforehand. It is the bidder's responsibility to confirm import eligibility prior to purchase. 

✓ Unless stated otherwise, you must assume that any cherished, personalized, or heritage vehicle registration is not included in the sale of a vehicle.