The Terrain 380 is Sinnis’ only big motorcycle in their range, nicely fitting in the market as a budget-friendly A2 Adventure bike. The Terrain 380 is a large bike that is offering people the full adventure and touring treatment from just £4,495 (+OTR).

But does this Chinese-made adventurer pack enough to rival its European and Japanese counterparts? Let's find out...

Styling and Design

When it comes to looks the Terrain 380 is a great-looking machine! With an older styled GS headlight, Tiger like bodywork and the choice of two colourways (Satin Silver or Rosso Red), it’s an impressive and large piece of kit that I think looks far bigger than a 380. With large crash bars, and that three-piece aluminium luggage set (for an additional £255), it really does look set to be a great touring option.

The large windscreen is fixed, and to be honest very well sized, where it keeps you well protected from wind buffering but without being annoying in the line of sight.

With the large USD forks at the front, 19” wheels, large disc brakes and those black crash bars it is a serious-looking bike!


The powerplant in the Terrain 380 is a liquid-cooled parallel-twin, 8-valve, single overhead cam, that produces 36.5 bhp at 9,000rpm and 35 Nm of torque at 6,500rpm. Being well under the 47hp limit, the Terrain 380 is truly A2-friendly. Accompanying that engine is a 6-speed gearbox.

Leaving HQ and hitting the tarmac of Norfolk you soon get accustomed to the Terrain's 6-speed gearbox. It is set-up so you do find yourself having to really work the gears for decent acceleration, but you do rifle through them pretty quickly with gears 4-6 very close together. Higher in the rev range and you do notice those vibrations from that parallel twin, so do expect the feeling to get a bit buzzy when ridden to its limits. It is a bike best enjoyed conservatively, and not constantly thrashed. Riding more gently and calmly you enjoy the Terrain for what it can truly offer.

Sinnis Terrain 380 Top Speed

The Sinnis Terrain 380 can reach speeds of up to 90mph.

Brakes and Suspension

The braking and suspension setup on the Terrain 380 are pretty decent! At the front are twin 300mm discs, with four-piston calipers. To the rear, a single 260mm disc with a single-piston caliper and, as expected, it comes with dual-channel ABS.

My spell riding the 380 was only in the dry, but the braking worked absolutely fine for me. With those twin discs, the front was nice and progressive and the single on the rear was adequate but naturally, it is those mammoths on the front that will do the bulk of the braking for you!

Suspension wise, we have the meaty-looking 41mm upside-down fork at the front, with an adjustable shock absorber, and to the rear slightly hidden away is a monoshock. When riding, for me the suspension was generally quite soft and does a great job on everyday roads along with that comfortable seat – long journeys are a joy!

Technology, Dash and Switchgear

When it comes to dash, the Terrain 380 has a mighty 7” liquid crystal display which houses all the vital information such as speed, revs, fuel gauge, odometer, trip, gear indicator, oil temperature, battery voltage and even max recorded speed, with a mode and select button to explore and confirm your display options.

The TFT display is full colour, and the main background colour tends to change according to the light conditions. It is slightly trigger happy and chances are you’ll have it work through its colour options a few times on one ride, though the colour change isn’t enough to stop some low-level glare in times of bright sunlight.

Either side of the dash is the typical warning lights. To the far left is a 12v charging port and to the far right is a USB charging port, giving you the chance of charging your phone and running a sat nav device all at the same time!

Seat Height and Riding Position

The padded seat comes in at a height of 820mm making it accessible for most riders, though for 5’ 6” me my feet are more in a tiptoed position when putting my feet down on the tarmac.

Once greeted by the Sinnis Terrain 380 in all its large glory, my first challenge was to see if I could sit on the thing and still have my dignity! Being one of the vertically challenged amongst us, at 5’ 6, I was intrigued as to how I would get on.

At 820mm, the seat height isn’t crazy high however, the bike is rather bulky with its aluminium panniers and top box so the combination of these things could have become an issue. I was thankfully able to sit on it successfully without looking like a fool. With it off its centre stand, I was then able to get both feet down OK, however, for me, my feet were definitely not flat on the floor.

Onto the riding position, it is exactly what you’d expect from an adventure bike, comfortable and upright keeping your wrists, arms, and back all nice and relaxed. The seat itself is pretty darn comfortable too which was a nice surprise.

Fuel Tank and MPG

The Terrain 380 has a large 18L fuel tank however, fuel economy can be expected to be around 50mpg, so economical figures aren’t admittedly the best. You’ll get a range of around 200miles on an entire tank.


Manual handling-wise, there is no denying that for an A2 bike, it is heavy! With fuel and the luggage boxes, the 380 is close to 240kg, which with its taller height there is a need to handle it respectfully and cautiously – especially for new riders.

When riding you don’t really notice that heavyweight, the bike handles very well, and with the addition of those luggage boxes still feels well-balanced. When riding urban and rural roads, the 380 will be absolutely fine and it’ll be more than capable of gentle touring – just remember the width of the bike with those boxes if you do a bit of filtering!

Sinnis Terrain 380 Price (2021-onwards)

The Sinnis Terrain 380 is an impressive piece of kit for the money.

Yes, some aspects could be improved; the engine gets a tad buzzy at higher revs and could do with a few more horses to help it out against rivals, fuel economy isn't its strongest point and it is on the heavy side, but then again when reminded of the ultra-low starting price of £4,495 (+OTR), you'll forgive the Terrain for its shortcomings.

Final Thoughts on the Sinnis Terrain 380

The Terrain 380 for me is an attractive bike, the LED headlight, big USD front forks, crash bars, and the luggage boxes result in this looking great and for a new rider, you'll most definitely get all the big bikes feelings you'd be after. The Terrain's liquid-cooled parallel-twin will have enough grunt from 50mph to 90mph that a rider moving on from a 125cc bike will feel and enjoy the increase in power.

On the road, and with that mix of comfy seat and positioning along with soft suspension, the Terrain 380 is well-equipped for leisurely long distances. Touring really shouldn't be a problem as long as you don't want to do it full-throttle. Though the gearing could be better as there are some pretty close gears, the clutch and gearbox worked without fault the whole time and felt good quality so, again, another great aspect for new big bike riders.

There are some strong competitors out there such as the incredible KTM 390 Adventure, but Sinnis has made sure to price the Terrain 380 very competitively and give those with smaller budgets a serious alternative.


  • Styling is one of its strongpoints
  • Very comfortable and easy to manoeuvre 
  • Affordable and cheap to run!


  • Very heavy for a smaller capacity bike
  • Don't know how well it will hold up in the rain (didn't get chance to test it)
  • Perhaps not the best bike for smaller riders

The Last Stop!

If you are looking to get insurance for your Sinnis Terrain or any other motorcycle - make sure to get a motorcycle insurance quote direct with Lexham!

Sinnis Terrain 380 Specification (2021-onwards)

Engine 380cc, 36.5bhp, liquid-cooled, parallel-twin with SOHC, 8-valve
Fuel tank 18L
Brakes Front and rear disc
Weight 200kg
Seat height 820mm
Price £4,495 (+OTR) or £4,799 (+OTR w/ luggage)

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