Kawasaki EX300

The Kawasaki Ninja EX300cc  is based on the Ninja 250R, a lightweight and inexpensive sport bike in production for over three decades.Like the Ninja 250R, it has a full fairing, but a wider rear tire, 140/70, than the instead of 130/70 on the 250R.The Ninja 300 also has 5 spoke wheels, neutral finder, and optional (ABS).By comparison with the 250R, the Ninja 300 also has a slightly smaller fuel tank, taller gearing, and a back-torque-limiting slipper clutch with an assist mechanism that decreases clutch lever effort. Despite being a sport bike, it has comfortable ergonomics (such as mid-position foot controls and an upright seat) which promote commuting.

Performance:

The Kawasaki Ninja EX300cc has a 296 cc (18.1 cu in. ) straight-twin engine Dynamometer tests showed that the Ninja 300 produces more power with 39.95 hp (29.79 kW) compared with the 250’s 25.48 hp (19.00 kW), and higher torque across the rev range at 18 to 13.57 lb⋅ft (24.40 to 18.40 N⋅m).

Its top speed has been recorded at 180 km/h (112 mph) and acceleration at 5.6 seconds from 0 to 97 km/h (0 to 60 mph), and around 14.5 seconds at 141.14 to 145.77 km/h (87.7 to 90.58 mph) in the quarter mile. 

The Ninja 300’s fuel economy was measured at around 70 mpg‑US (3.4 L/100 km; 84 mpg‑imp), while other sources reported it at 54.1 mpg‑US (4.35 L/100 km; 65.0 mpg‑imp), though regardless of the methodology, the 300 showed improved gas mileage over the Ninja 250R.

  • Sale! Kawasaki Ninja 250/300 STD. Titanium Axle Nut Kit

    Kawasaki Ninja 250/300 STD. Titanium Axle Front Nut Kit M14 With Washers Kit 2008/2017

    Original price was: $24.95.Current price is: $19.99.

    For decades titanium was considered an “aerospace metal” and was used exclusively in this application.

    Titanium Front and Rear Axle Nut Kit  Our Titanium 6AL-4V (grade 5) Nuts/washers are highly corrosion resistant, extremely light (45% weight saving!) and with rolled threads offers excellent strength and quality. These nuts are an extra visual in the design and a bigger weight saving over OEM Nuts and Washers

     

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  • Sale! Ceramic Transmission Bearings Kawasaki EX250

    Kawasaki Ninja 250cc/300cc Ceramic Transmission Bearings 2008/2017

    Original price was: $369.99.Current price is: $349.99.

    One of the advantages of ceramic balls is that they remove the problem of two identical materials breaking each other down. Because ceramic bearings are harder than steel bearings, they are more durable, lasting anywhere from five to 20 times longer. This also equals an almost zero risk of bearing seizure

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  • Kawasaki Ninja 250cc/300cc/400cc Brake Pad Pin

    Kawasaki Ninja 250cc/300cc/400cc Brake Pad Pin

    $19.99

    The brake pins are the supporting items to keep your brake pads secure into your OEM brake caliper(s).The removal of these items you will find that the 5mm allen on the end will start to distort from loosing and tightening everytime you change your brake pads, this is one issue and the second issue is that the brake pad backing plate will start to groove the pin with due time ,and will create the brake pads from gliding in a smooth way when the brakes are applied

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  • Kawasaki Ninja Caliper Kit

    Kawasaki Ninja 250cc/300cc/400cc/500cc Caliper Seal Kit Front/Rear

    $39.99

    You may not notice that when your brakes are heating up that the brake pads might be dragging, one of he reasons is that you might need to clean our brake calipers, if so pre order this seal kit for your Kawasaki Ninja 250cc/300cc/400cc/500cc.

     

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  • Brembo Brake Caliper Kit Kawasaki Ninja EX300

    Kawasaki Ninja 300 Brembo Brake Caliper #20516584/20516588 with Mounting Bracket 2013/2017

    Price range: $499.98 through $1,244.95

    Brembo Caliper and Mount by meticulously selecting the materials used, Brembo can achieve ever higher standards in terms of technology and quality, which translate to superlative performance  and outstanding reliability and safety. These products make the benefits of Brembo’s extraordinary wealth of technical expertise available to owners who want to enhance the character and performance of their motorcycles with track-proven components.

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  • Sale! Kawasaki ex300cc EBC Rotor

    Kawasaki Ninja 300 EBC Floating Front Rotor 2013/2017

    Original price was: $309.99.Current price is: $289.99.

    If your bike is fitted with solid rotors, it’s time to change them out now. If you bought a two piece non-EBC rotor, only time will tell how wise that investment was and maybe if you never really do load up those brakes and get them hot, you will be OK.

    Weight of the  XC series is reduced by 5-10% by using a six only button drive system on a lightweight alloy center hub.

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  • Sale! SBS Dual Carbon Ninja 300

    Kawasaki Ninja 300 SBS DC Dual Carbon Brake Pads

    Original price was: $69.99.Current price is: $64.99.

    The upgrade choice for Superbike, Supersport and Superstock racers in National Championship as well as for Track Day riders High-tech carbon compound developed for racing and standard brake systems. They offer great breaking power and feel that allow most any rider to trail brake with confidence. Low heat transfer rate protects brake system and brake fluid against extreme temperatures

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  • Sale! Kawasaki Ninja 300 Brembo Caliper Mount

    Kawasaki Ninja 300cc Brembo Axial Brake Caliper Mount

    Price range: $179.99 through $209.98

    This kit will mount up to your Kawasaki right fork leg and allow you to install a Brembo 20516568 or a 20516589  Caliper P4 30/34C  and have superior braking like no other set up on the market.

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  • Sale! Kawasaki Ninja 300cc OEM Piston Rings

    Kawasaki Ninja 300cc OEM Piston Rings 2013/2017 13008-0047

    Original price was: $64.99.Current price is: $59.99.

    Piston Rings form the critical seal between the piston and the cylinder wall.

    2 SETS REQUIRED FOR 1 Engine

     

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  • Kawasaki Ninja 400 421.81/2mm over piston rings

    Kawasaki Ninja 300cc Overbore +2mm Piston Rings 315.27cc

    $39.99

    Kawasaki Ninja 300 315.27cc/2mm over piston rings are designed for the Spears Racing SP12-300 Racing piston Kit.

    2 SETS REQUIRED FOR 1 Engine

    Piston Info

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  • Kawasaki ninja 300cc Undercut

    Kawasaki Ninja 300cc Undercut Transmission 2013/2017

    Price range: $650.00 through $1,075.00
    *** Remove your shipped transmission from FedEx Pak once it is received***

    Being on the race track is a lot of fun and at the same time serious business, this is a common complaint we get at Spears Racing”I am in the top end of 5th gear and fully pegged on the throttle,all of a sudden it goes into 4th gear or a false neutral” Yes very common and this is why we have transmissions on the shelf for the fast exchange program  

    Core Fee 2024

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  • Sale! Brembo 107A48608 Z04 Compound

    Kawasaki Ninja 300cc/400cc/500cc Brembo Z04 Brake Pads: 107A48608 / M088Z04 Z04 Compound

    Original price was: $189.99.Current price is: $179.99.

    The most significant characteristics of this material are its high friction and consistent efficiency, especially at high disc temperatures. Always consistent braking for the entire duration of the race and make the braking system much less prone to fade

    Please Note that every product is a set of pads for 1 caliper therefore  1 disk

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  • Sale! Vesrah VD 250 RJL

    Kawasaki Ninja EX250/ EX300cc Vesrah VD-250 RJL Front Brake Pads 2008/2017

    Original price was: $109.99.Current price is: $99.99.

    Vesrah VD-250 RJL Brake Pad compound is the perfect choice for Aggressive Street Riders, Track Day Riding and Racers.

    A harder backing plate than OEM brake pads for more even pressure across the pad.
    More initial “bite” giving the brakes a more aggressive feel.
    Pad compound is resistant to fade related to heat buildup.
    No Bedding in of the pad is required before usage.

    RJL high performance racing brake pads give you powerful braking at the track.

    Price is for one card.  Enough pads to service one caliper.

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  • Sale! Vesrah VD-250 RJL ZZ

    Kawasaki Ninja EX250/ EX300cc Vesrah VD-250 RJL ZZ Front Brake Pads 2008/2017

    Original price was: $134.99.Current price is: $129.99.

    VD-250-RJL ZZ high performance racing brake pads give you powerful braking at the track. Price is for one card.  Enough pads to service one caliper.

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  • Sale! Kawasaki Ninja EX250/300/400/500 Chain Guard Shark Fin/Toe Guard with Swingarm Spools 2008/Current

    Kawasaki Ninja EX250/300/400/500 Chain Guard Shark Fin/Toe Guard with Swingarm Spools 2008/Current

    Price range: $54.99 through $84.99

    NO MORE DRILLING OF YOUR SWING ARM!!

    This design is laser precision cut and masterfully contoured to fit your Kawasaki Ninja 250/300/400 with out any holes to be drilled into your swing arm as most other shark fins on the market.

    This product is made to fit several bikes , the current hole may need to be enlarged a slight amount for some models.

    “Often Imitated Never Duplicated”

     

     

     

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  • Sale! Kawasaki Ninja EX250/EX300 Ceramic Wheel Bearings Front/Rear 2008/2017

    Kawasaki Ninja EX250/EX300 Ceramic Wheel Bearings Front/Rear 2008/2017

    Price range: $189.99 through $389.98

    Because ceramic bearings are harder than steel bearings, they are more durable, lasting anywhere from five to 20 times longer. This also equals an almost zero risk of bearing seizure. The “Longevity of a well-built high-quality ceramic bearing, in many cases, can be up to 10 times longer than commonly used stock bearings.

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