Yamaha YZFR3

The Yamaha YZFR3 is an entry level sport motorcycle, designed to compete with rivals in 300 cc sector, such as the Honda CBR300R,Kawasaki Ninja 300,Kawasaki Ninja 400 and KTM 390 series. It is designed as a well-balanced sport motorcycle, with some design similarity to R25, such as engine (which is bored out). With a low seat height, the windscreen sufficiently deflects the wind overhead.

The 321 cc performance-oriented engine is lightweight, powerful, and has a wide power band. Most of the power can be found from 7,000 rpm to redline (12,500 rpm approx.). The engine uses a downdraft induction fuel injection system and the 10-spoke cast aluminum wheels reduce unsprung weight. The cylinders are all-aluminum. For 2017, the YZF-R3 offers optional ABS. The 2018 Model has dual channel ABS and is EURO IV compliant. The 2019 saw a big change to the bike with a newer style front end(inverted forks) and better lines and of course better electronics.

You will find the worlds leading performance products here at Spears Enterprises/Spears Racing. The first Spears Racing Yamaha R3 was built in early 2015 and was raced at the club level, since then Spears Racing has produced several winning combinations and is currently supporting racers in the USA and Around the world with their products.

Technical Bulletin 01-2021 prompted us to build a section this spells out the Approved Engine kits/pistons for your Yamaha YZFR3.

  • Yamaha R3 .010 gasket

    Yamaha R3 High Compression Stock Bore Head gasket .010 2015/Current

    $94.50

    Increases your stock Compression to allow better off the corner power

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  • Sale! Yamaha R3 Levers

    Yamaha R3 Levers, Adjustable, Expandable and Folding 2015/Current

    Original price was: $129.99.Current price is: $119.99.

    These levers deliver a fine, comfortable feel and can be adjusted to fit nearly every hand size and finger reach. Extremely affordable yet built to race-proven standards, they feature a 90-degree folding design that helps prevent breakage in a crash and an extendable tip that adjusts from full length to short—or anywhere in between.

     

    Important Installation Note Once you have made your final adjustments, add a drop of thread-locking agent to the hardware.

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  • Sale! Yamaha R3 Steering Damper Kit 2015/2018

    Yamaha R3 Linear Spears Racing Steering Damper Kit Complete 2015/Current

    Original price was: $499.99.Current price is: $469.99.

    Spears Racing has been on the cutting edge of making new products for the little commuter style bikes for decades, most of these products come from the motorcycle being used for something other than what it was intended to be use for…RACING!! this is why we have brought the Yamaha R3 Steering Damper Kit Complete 2015/current.

    A steering damper on an R3 is not a luxury item if you are running higher speeds, slicker tires, or a more aggressive setup. It helps control head-shake and unwanted steering inputs when the front end gets light or the chassis is working hard. A dedicated, bike-specific mount is what makes that damper actually usable instead of a temporary clamp-on experiment. This kit is built as a permanent racing solution, not a temporary street accessory.

     

     

    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • Sale! Overbore 339.43cc Piston Kit

    Yamaha R3 Overbore +2 mm Ceramic Dome Piston Kit/Cylinder/Gaskets 339.43cc

    Price range: $79.98 through $1,759.97

    Spears Racing Piston Kits have been winning races and Championships all over the world for over 4 decades. Spears Racing pistons have been in several of the race wins in close course racing and in road circuits in Europe and has won the Isle Of Man TT Twins race several times.

     

     

    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • Yamaha R3 2mm Piston Rings

    Yamaha R3 Overbore +2mm Piston Rings 339.43cc

    $39.99

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

    2 SETS REQUIRED FOR 1 Engine

    Piston Info

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  • Yamaha R3 .010 gasket

    Yamaha R3 Plus 2mm/70mm Head gasket 2015/Current

    $94.50

    Increases your stock Compression to allow better off the corner power.

    Yamaha R3 +2mm Head Gasket

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  • Yamaha R3 Racing Valve Spring

    Yamaha R3 Racing Valve Spring 2015/2025

    $219.99

    This spring can work with the Spears Racing camshafts or stock camshafts for Super sport racing. These springs will calm the “Spring Float at the high RPM’S and will just calm the engine noise down.

    Yamaha R3 Racing Valve Spring Kit contains:

    8ea. Racing Valve Springs

     

    The Yamaha R3 Racing Valve Spring have been tested on race engines built by Spears Racing and used by numerous other race teams around the world.

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  • Samco Hoses Yamaha R3

    Yamaha R3 Samco Hose Kit 2015/Current

    Price range: $94.99 through $124.98

    Samco Sport Hose Kits have been race proven around the world as the #1 choice of many racing teams in series such as MotoGP,World Super Bike, BSB,MotoAmerica and Club Racers

    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • Yamaha R3 Standard Piston Rings

    Yamaha R3 Standard Bore Piston Rings Spears Racing CP Pistons

    $39.99

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

    2 SETS REQUIRED FOR 1 Engine

    Piston Info

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  • Sale! Yamaha R3 Steering Damper Mount

    Yamaha R3 Steering Damper Mount Kit 2015/2018

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

    Spears Racing’s designed Steering Damper Mount Kit for the 2015/2018 Yamaha R3 The unit is “high precision machining”

    A steering damper on an R3 is not a luxury item if you are running higher speeds, slicker tires, or a more aggressive setup. It helps control head-shake and unwanted steering inputs when the front end gets light or the chassis is working hard. A dedicated, bike-specific mount is what makes that damper actually usable instead of a temporary clamp-on experiment. This kit is built as a permanent racing solution, not a temporary street accessory.

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  • Sale! Yamaha R3 Steering Damper kit 2019/2020

    Yamaha R3 Steering Damper Mount Kit 2019/Current

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

    Spears Racing’s designed Steering Damper Mount Kit for the 2019/2020 Yamaha R3 The unit is “high precision machining”

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  • R3 Undercut Transmission

    Yamaha R3 Undercut Transmission 2015/Current

    Price range: $650.00 through $1,250.00
    *** 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

    R3 Undercut Transmission is Always in Stock!!!
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  • Sale! Yamaha R3 Slipper Clutch

    Yamaha R3/MT-03 Slipper Clutch 2015/Current

    Price range: $49.99 through $1,199.98

    Spears Racing’s slipper clutch reduces rear wheel chatter on downshifting, allowing better chassis stability under braking and entry to corners, reducing the chances of crashing and allowing the rider to reduce lap times as a result of better grip.

    Every Spears Racing Slipper Clutches arrive with the Proper Clutch Springs

    Spears-Racing-Yamaha-R3-Slipper-Clutch-Installation

    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • Sale! Yamaha R3 Basegasket .014

    Yamaha R3/YZFR-3 Base gasket 2015/Current

    Original price was: $21.99.Current price is: $19.99.

    Spears Racing’s Yamaha R3 Basegasket is comprised of a Single layer of Stainless Steel and is coated . Spears uses Stainless steel for increased strength, its ability to rebound and corrosion resistance. The outer layers of the gasket is coated on both sides and is designed to meet the demands of a variety of harsh sealing environments, load conditions and surface finishes. Heat resistant to 250C or 482F

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  • Sale! Yamaha YZF R-3 Clutch Cover Gasket

    Yamaha YZF R-3 ALUMINUM CORE/RUBBER BONDED CLUTCH COVER GASKET 2018/CURRENT 1WD-E5461-00-00

    Original price was: $54.99.Current price is: $49.99.

    This  Yamaha YZF R-3 Clutch Cover Gasket is manufactured by Yamaha. The OEM part number is 1WD-E5461-00-00 AFM is a chemically blown, compounded nitrile synthetic rubber bonded to an aluminum core with temperature resistance of over 2500°F.

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  • Yamaha R3 Race Clutch Springs

    Yamaha YZF R-3/MT-03 Racing Clutch Kit Springs 2015/Current

    $49.99

    Heavy duty clutch springs are pre-set, shot-peened, and heat treated for performance and durability.(Set of 4 Springs)

    These Clutch spring are manufactured by a USA spring company to the specifications that Spears Racing has designed for a “No Slip” more seat pressure that the OEM stock Springs.

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