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Yamaha SRX 400

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Make Model

Yamaha SRX 400

Year

1985 - 86

Engine

Four stroke, single cylinder, SOHC, 4 valves

Capacity

399 cc / 24.3 cu-in
Bore x Stroke 87 х 67.2 mm
Cooling System Air cooled
Compression Ratio 9.2:1

Induction

YDIS Twin Carburetor

Ignition 

TCI 
Spark Plug DPR8EA-9, IX24B, DPR8EIX
 Starting Kick

Max Power

33 hp / 24.6 kW @ 7000 rpm

Max Torque

3.4 kgf-m / 24.5 lb-ft @ 6000 rpm

Transmission 

5 Speed 
Final Drive Chain, 428 Heavy Duty O-Ring, 138 links
Sprocket Front / Rear 17 / 50

Front Suspension

Telescopic forks

Rear Suspension

Dual shocks

Front Brakes

Single 320mm disc 4 piston caliper

Rear Brakes

Single disc

Front Tyre

110/70-17 Tubeless

Rear Tyre

140/70-17 Tubeless

Dry Weight

147 kg / 324 lbs

Fuel Capacity 

15 Liters / 3.9 US gal

Yamaha SRX400 and SRX600 by realclassic.co.uk

These sleek and sporty single-cylinder machines should've been the stars of the 1980s, making the most of the cult of the café racer. Instead, people bought UJMs(Universal Japanese Motorcycle). Anarchy wonders if history is about to repeat itself...

Once upon a time in a green and pleasant land, motorcycling had evolved from mostly British bikes to an assortment of fast Japanese two-stroke mopeds and motorcycles, then onto the UJM multi-cylinder four-strokes. Because of the high accident figures from 16-year-old moped riders the laws had been changed and this, along with economic factors, contributed to a decline in motorcycle sales during the 1980s.

Remember the 1980s? George Orwell's 1949 novel '1984' describes a totalitarian government bent on total manipulation and certainly the video bites of bloody faced miners being beaten by police officers for two years echoed the authors prophetic words. Strange times to be born into.

Manufacturers keen on increasing sales canvassed their customers and asked what kind of motorcycle they would like them to build. The mass majority asked for a 'real motorcycle', one that was nimble with neutral handling, had good fuel economy, sufficient power but most importantly captured the heroic feel of motorcycling from years gone by. Ghosts of the Gold Star and Velocette still haunted the souls of real motorcyclists and a new motorcycle that could capture some of that X factor and still be reliable and useable as a daily ride was an overwhelming choice. Have your cake and eat it, so to speak.

I like all the detailing such as the alloy dash with the central speedometer and tachometer fitted off to one side like an accessory on a café racer. The seat height is very low and the bike is light and nimble and with its narrow size I really haven't found a better bike for taking on the urban jungle and filtering through west London traffic.

My last one ran well up to 80,000 miles before I sold it on, still running good and starting easily. Never needed repairs and I don't think I ever replaced the spark plug either.

Most of the SRX bikes are grey / parallel imports although a few are official. The red dash light that lights up at 55mph is the main giveaway on the imports signalling that you really should not be having so much fun on Japanese roads. The UK seats were more padded, I guess because the average rider weight is higher in the west. UK bikes have twin front brakes that I found no better that the larger Brembo four-pot type on the imports. Both are very good.

So the SRX has all the credentials of a true classic bike. A troubled youth forced it into a cult sub culture, a rebel without a cause, rarity, age and a riding feel that recaptures the café racer greats like the BSA Gold Star but without the white finger trauma and purchase costs of the Beezer.

Time moves on and you think that manufacturers learn their lessons but now there is a rekindling for this kind of bike once again. Just like flared trousers coming around once again Yamaha have just released the MT-03, a wonderful 660cc thumper that I would dearly love to own.

In Yamaha's words: '…born for the kind of 21st century roads where bigger high-performance bikes struggle to unleash their full potential. MT-03 (SRX?) has instant, pulsing low-down power from its single-cylinder engine and a totally new sports chassis concept engineered for hardcore street sports riding. You get a short wheelbase, low seat height, focused centre of gravity and forward-biased riding position for hyper-manoeuvrability, superb rider feedback and excellent traction. So MT-03 (SRX?) is perfect for intense fun riding, it doesn't matter whether you're doing it on tough urban streets or mountainside hairpins.'

So in a year or two, when the MT-03s are piling up in warehouses unsold and the price has plummeted because people still carry on buying four-cylinder sports bikes, I'll be there to snap one up. Like the SRX they are a true rider's bike. If the MT-03 is a success then perhaps the SRX was just before its time and a little misunderstood.

Source realclassic.co.uk