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Discussion 2024 Kawasaki ZX-4R & ZX-4RR - Coming Spring 2023 to Australia

Discussion in 'Kawasaki 250cc In-line 4's' started by Linkin, Feb 7, 2023.

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  1. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Figured this deserved its' own thread.

    Kawasaki ZX-4R

    [​IMG]

    Details:

    Model Code ZX400P

    Assist & Slipper Clutch
    Economical Riding Indicator
    Electronic Throttle Valves
    KTRC (Kawasaki Traction Control)
    Power Modes
    ABS (Anti-Lock Brake System)
    Horizontal Back-Link Rear Suspension

    Specifications:

    Engine 4-stroke In-Line Four
    Displacement 399 cc
    Bore x Stroke 57.0 x 39.1 mm
    Compression Ratio 12.3:1
    Valve System DOHC, 16 valves
    Fuel System Fuel injection: ø34 mm x 4
    Ignition Digital
    Starting Electric
    Cooling Liquid-cooled
    Lubrication Forced lubrication, wet sump
    Transmission 6-speed, return
    Primary Reduction Ratio 2.029 (69/34)
    Gear Ratio: 1st 2.929 (41/14)
    Gear Ratio: 2nd 2.056 (37/18)
    Gear Ratio: 3rd 1.619 (34/21)
    Gear Ratio: 4th 1.333 (32/24)
    Gear Ratio: 5th 1.154 (30/26)
    Gear Ratio: 6th 1.037 (28/27)
    Final Reduction Ratio 3.429 (48/14)
    Clutch Wet multi-disc, manual
    Final Drive Chain

    Performance:

    Frame Trellis, high-tensile steel
    Front Suspension ø37 mm inverted fork (SFF-BP) with top-out springs
    Rear Suspension Horizontal Back-link, gas-charged shock with spring preload adjustability
    Front Tyre 120/70ZR17M/C (58W)
    Rear Tyre 160/60ZR17M/C (69W)
    Front Brake/s Dual semi-floating ø290 mm discs
    Front Caliper/s Dual radial-mount, monobloc, opposed 4-piston
    Rear Brake ø220 mm disc
    Rear Caliper Single-piston




    Kawasaki ZX-4RR

    [​IMG]


    Details:

    Model Code ZX400S

    Assist & Slipper Clutch
    Economical Riding Indicator
    Electronic Throttle Valves
    KQS (Kawasaki Quick Shifter - Dual Direction)
    KTRC (Kawasaki Traction Control)
    Power Modes
    Smartphone Connectivity
    ABS (Anti-Lock Brake System)
    Horizontal Back-Link Rear Suspension

    Specifications:

    Engine 4-stroke In-Line Four
    Displacement 399 cc
    Bore x Stroke 57.0 x 39.1 mm
    Compression Ratio 12.3:1
    Valve System DOHC, 16 valves
    Fuel System Fuel injection: ø34 mm x 4
    Ignition Digital
    Starting Electric
    Cooling Liquid-cooled
    Lubrication Forced lubrication, wet sump
    Transmission 6-speed, return
    Primary Reduction Ratio 2.029 (69/34)
    Gear Ratio: 1st 2.929 (41/14)
    Gear Ratio: 2nd 2.056 (37/18)
    Gear Ratio: 3rd 1.619 (34/21)
    Gear Ratio: 4th 1.333 (32/24)
    Gear Ratio: 5th 1.154 (30/26)
    Gear Ratio: 6th 1.037 (28/27)
    Final Reduction Ratio 3.429 (48/14)
    Clutch Wet multi-disc, manual
    Final Drive Chain


    Performance:


    Frame Trellis, high-tensile steel
    Front Suspension ø37 mm inverted fork (SFF-BP) with spring preload adjustability and top-out springs
    Rear Suspension Horizontal Back-link, BFRC lite gas-charged shock with piggyback reservoir, compression and rebound damping and spring preload adjustability, and top-out spring
    Front Tyre 120/70ZR17M/C (58W)
    Rear Tyre 160/60ZR17M/C (69W)
    Front Brake/s Dual semi-floating ø290 mm discs
    Front Caliper/s Dual radial-mount, monobloc, opposed 4-piston
    Rear Brake ø220 mm disc
    Rear Caliper Single-piston
     
    • Like Like x 2
    Linkin, Feb 7, 2023
    #1
  2. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Linkin, Feb 7, 2023
    #2
  3. jack_lee

    jack_lee Active Member

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    We are just getting the ZX-25R this year in Malaysia.
     
    jack_lee, Feb 28, 2023
    #3
  4. thebeefsalad

    thebeefsalad Well-Known Member

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    Wonder what kind of numbers the AU model is going to get. They neutered it for the US and Canada as far as I can tell.
     
    thebeefsalad, Feb 28, 2023
    #4
  5. DannoXYZ

    DannoXYZ Well-Known Member

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    My Bike:
    Honda CB125TT, Kawi EX250F, EX250J race, Honda CBR250RR-MC19, NSR350R-MC21 VF500F, CBR600RR, VFR750F
    Yeah, down from 79hp to 56hp or so. Damn hippie Bastids!!!
     
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    DannoXYZ, Feb 28, 2023
    #5
  6. jmw76

    jmw76 Well-Known Member

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    Yep can't show up those poor performing Hardleys.
     
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    jmw76, Feb 28, 2023
    #6
  7. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Might be California model perhaps? What is the reason for the restriction?

    In any case it's looking like one of these will be my next bike. I actually sold my MT09SP a while ago, right now I have a 2010 Versys 650 that I got cheap from work
     
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    Linkin, Feb 28, 2023
    #7
  8. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Location:
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    My Bike:
    *Kawasaki ZXR250C *Yamaha FZR250R 3LN1 *Yamaha FZR400 *Triumph Bonneville 750 T140V *Triumph Daytona 675 *Triumph Tiger 800XC
    Whats it like to ride?

    Maybe we need to organise a weekend away as per the old days ( the maroons can go eat a **** ) but including some adventuring , before u move it on :cool:
     
    GreyImport, Feb 28, 2023
    #8
  9. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Sounds like a plan

    It's pretty good with a fresh set of tyres on it, the old ones were worn way square on the back and triangled on the front. I put a set of Michelin Road 6's on it, they were expensive even at staff price. Tyre prices have gone up a lot.

    Front forks were set way too stiff and the rear shock isn't great, but it's a direct bolt on from frame to swingarm with no linkage so it will never feel amazing. Might throw a YSS unit on it depending on price.

    I'd done forks, brakes and steering bearings on it already as it was the bosses' loaner bike for customers before I bought it. Boss got it cheap as it had a dead tip over switch which took a while to find. Just needs a fresh chain/sprockets and it will be a solid daily hack or scrub basher with some off road tyres. Oil/filter and usual service items done too. Will have to do the air filter, plugs and throttle balance at some point (the rabbit hole never ends!!)

    Incidentally it runs the same tyre sizes as the new ZX4R does, 120/70 and 160/60
     
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    Linkin, Feb 28, 2023
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  10. DannoXYZ

    DannoXYZ Well-Known Member

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    My Bike:
    Honda CB125TT, Kawi EX250F, EX250J race, Honda CBR250RR-MC19, NSR350R-MC21 VF500F, CBR600RR, VFR750F
    Noise and lesser extent emissions. For over 10-yrs now, U.S. high-performance models have been crippled. Restricted intake tracts with foam to reduce intake noise. Extra baffles in mufflers. ECU programming with non-optimal maps. CBR1000RR-R SP is down -48bhp compared to R.o.W models. It started in 2009 with CBR600RR using crippled ECU maps in high-end compared to year before.

    [​IMG]
     
    • Bummer Bummer x 2
    DannoXYZ, Feb 28, 2023
    #10
  11. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Good business for the aftermarket to get them back to what they are supposed to be.
     
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    maelstrom, Feb 28, 2023
    #11
  12. DannoXYZ

    DannoXYZ Well-Known Member

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    Yeah! But you have to do it yourself too. Commiefornia has forbidden shoppes from modifying anything to do with ECU and emissions. About 16 other states have adopted CA's emissions standards and is locking down stock setups. Grr.... Luckily all the new ECUs are re-programmable. Just need source for non-USA maps.
     
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    DannoXYZ, Mar 1, 2023
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  13. thebeefsalad

    thebeefsalad Well-Known Member

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    rumor has it Graves has remapped the ECU already and got it back into the proper range. but rumors are hard to believe until we have proof. Closest proof I have is their instagram post of them dynoing one (they do not show numbers/graph in the post, only their exhaust system/back of the bike)
     
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    thebeefsalad, Mar 1, 2023
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  14. Andych

    Andych Moderator Staff Member Premium Member Contributing Member Dirty Wheel Club

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    Here in Aus they are probably going to go after the LAMS market in much the same way Triumph did with the Trident and Tiger Sport 660.
    It all depends on the market they are trying to hit.
     
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    Andych, Mar 1, 2023
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  15. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    What will they have to restrict the power to?

    I know there's a power:weight ratio for a LAMS bike, just don't know what it actually is

    EDIT: So I just found it 150KW/Ton
    The weight for the calculation is the bike weight [dry/semi wet/wet unknown] plus a nominal 90KG rider weight - assuming dry weight
    Claimed Power output seems to vary a lot - going with 57KW

    So 278 [KG]/1000 = 0.278 x 150KW = 41.7KW for LAMS qualification

    AND

    It looks like they've already got that power to weight ratio sorted

    This article is informative with actual submitted power output data
    https://www.motorcycle.com/new-mode...does-the-2023-kawasaki-ninja-zx-4rr-make.html

    Expect a de-restriction frenzy in due course
     
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    Last edited: Mar 1, 2023
    ruckusman, Mar 1, 2023
    #15
  16. jmw76

    jmw76 Well-Known Member

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    @ruckusman probably makes sense to target the LAMS market. Not a lot of sense chopping into their own super sport market.
     
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    jmw76, Mar 1, 2023
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  17. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    The ZX4R and ZX4RR are not listed in the LAMS category on Kawasaki's website. I'd rather they didn't neuter the bike for LAMS compliance.
     
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    Linkin, Mar 1, 2023
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  18. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    It's a very lucrative market, so many threads on forums - what's the fastest LAMS bike, what's the most powerful LAMS bike etc etc

    I notice they haven't given it a huge 180 back tyre, so it should go round bends and corners like the 400's of the late 80's and early 90's

    It will be interesting to see what the market reaction is and if there's a response from the other OEM's with a 4CYL 400 sportsbike
     
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    ruckusman, Mar 1, 2023
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  19. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Honda supposedly have a new CBR400 in the works based on the fuel injected CB400 engine
     
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    Linkin, Mar 1, 2023
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  20. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    If I were in the market I'd be hoping the same, but a LAMS version and a full power version would significantly increase marekt potential
     
    ruckusman, Mar 1, 2023
    #20
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