Yamaha R3 vs KTM RC 390 vs Aprilia RS 457 vs Kawasaki Ninja 400: Specifications Compared

  • Published December 16, 2023
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The 300-500cc supersport segment is heating up, so we pit four of the best bikes in the segment against each other

Yamaha R3 vs Aprilia RS 457 vs KTM RC 390 vs Kawasaki Ninja 400

Yamaha has FINALLY launched the R3 in India (once again) and we’re very excited for it. And that, combined with the recent launch of the Aprilia RS 457, means we just HAD to pit the four best bikes in this segment – the KTM RC 390, Kawasaki Ninja 400 and the aforementioned two – against each other to see which one comes out on top. Here’s how that went:

Engine

Specifications

Yamaha R3

Aprilia RS 457

KTM RC 390

Kawasaki Ninja 400

Engine

321cc liquid-cooled parallel-twin engine

457cc liquid-cooled parallel-twin engine

373cc liquid-cooled single-cylinder engine

399cc liquid-cooled parallel-twin engine 

Power

42PS @ 10,750rpm

47.6PS @ 9400rpm

43.5PS @ 9000rpm

45PS @ 10,000rpm

Torque

29.5Nm @ 9000rpm

43.5Nm @ 6700rpm

37Nm @ 7000rpm

37Nm @ 8000rpm

Gearbox

6-speed

6-speed

6-speed

6-speed

Aprilia RS 457 Engine

There is a very clear winner here (at least on paper), and it’s obviously the Aprilia RS 457. Its displacement advantage means it makes the most power and torque here. And even more importantly, it makes its peak torque at 6700rpm – the lowest of the lot – which should ideally ensure ample bottom-end grunt without compromising  its top-end whack. That very characteristic can also be seen in the RS 457’s near square (almost identical bore and stroke figures) engine configuration, as that offers an ideal balance between high-end power and low-end torque.

Yamaha R3

Both the Japanese bikes are high-revving ones and you will need to rev them out to make them feel exciting. The RC 390 is rev-happy too, but with all the updates its engine got last year, its torque is much more spread out,  so it now feels a lot more tractable and versatile. More about that in our real-world road test review.

Underpinnings

Specifications

Yamaha R3

Aprilia RS 457

KTM RC 390

Kawasaki Ninja 400

Front suspension

Inverted Fork (130mm travel)

Preload-adjustable inverted fork (120mm travel)

Inverted fork

Telescopic Fork (120mm travel)

Rear suspension

Monoshock (125mm travel)

Preload-adjustable monoshock (130mm travel)

Preload-adjustable monoshock

Monoshock (130mm travel)

Front brake

298mm disc

320mm disc

320mm disc

286mm disc

Rear brake

220mm disc

220mm disc

230mm disc

193mm disc

Front tyre

110/70 - R17

110/70 - 17

110/70 - 17

110/70 - 17

Rear tyre

140/70 - R17

150/60 - 17

150/60 - 17

150/60 - 17

Aprilia RS 457

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While all the bikes are pretty closely stacked here, the RS 457’s preload adjustability for its fork should give it a slight edge over the other three. Riders of varying weight should be able to tune it to find the perfect setup for themselves. Interestingly, the R3 also packs the skinniest rear tyre and during our first ride last month, we found its tyres to be a bit lacking. So if you’re a serious rider, we recommend a tyre upgrade.

Dimensions

Specifications

Yamaha R3

Aprilia RS 457

KTM RC 390

Kawasaki Ninja 400

Wheelbase

1380mm

NA

NA

1370mm

Ground clearance

160mm

NA

153mm

140mm

Fuel tank capacity

14 litres

13 litres

13.7 litres

14 litres

Seat height

780mm

800mm

835mm

785mm 

Kerb weight

169kg

175kg

172kg

168kg

Kawasaki Ninja 40

The Japanese bikes come out as the more practical ones of the lot with their low seat heights, manageable kerb weights, and big fuel tanks. Now, yes, the Ninja 400’s 140mm ground clearance might be a bit concerning but we found it to be ample for most situations when we tested it out last year.

KTM RC 39

The elephant in this room, then, is the RC 390’s 835mm seat height, which seems very daunting on paper, especially when you compare it to that of the other three. That said, every time we’ve ridden it, even the shorter boys have been comfortable enough, so it isn’t something worth worrying about. 

Features

 

Yamaha R3

Aprilia RS 457

KTM RC 390

Kawasaki Ninja 400

TFT Console

No

Yes

Yes

No

Bluetooth Connectivity

No

Yes (Optional)

Yes

No

Slipper Clutch

No

Yes

Yes

Yes

Aprilia RS 457 Console

Unsurprisingly, the Japanese bikes have turned out to be the most old-school of the lot. Both, the R3 and the Ninja 400, get none of the fancy electronics. The R3 doesn’t even have a slipper clutch, something that’s considered standard equipment in this segment. And it’s even funnier when you realise that the R15 V4 (a bike with half the R3’s displacement) offers a TFT console on its top-spec variant, an accessory quickshifter, and traction control, a slipper clutch, as well as VVA (Variable Valve Actuation) as standard fitment.     

Price & Verdict

Yamaha R3

Aprilia RS 457

KTM RC 390

Kawasaki Ninja 400

Rs 4,64,900

Rs 4.10 lakh 

Rs 3,18,173 

Rs 5.24 lakh 

(all prices ex-showroom Delhi)

Yamaha R3

Here, surprisingly, the Japanese bikes are once again similar, but in an unpleasant way; Owing to them coming through the CBU (Completely Built Up) route, they’re the priciest of the lot. While the Ninja 400’s Rs 5.24 lakh price tag remains inexplicable, even the R3’s Rs 4.64,900 price is quite hard to justify. Yes, it’s coming through the CBU (Completely Built Up) route but the Aprilia RS 457 packs a lot more (on paper) at a much lower price, which is all down to the fact that it’s produced locally at the bikemaker’s facility at Baramati, Maharashtra. 

KTM RC 39

And finally, if you’re on an even tighter budget, the RC 390 is not only arguably the best single-cylinder bike in its segment, but at Rs 3.18 lakh, is also pretty good value for money too (all prices ex-showroom).


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