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GSX-R1000 Road Race Engine Packages

Modern four-stroke engines are remarkable things. These technological marvels are the ultimate in performance and reliability for average riders as well as racers. Large doses of torque and linear power delivery make four-strokes the number one choice for road racing. In recent years the weight and reliability of these engines have made great strides and today, four strokes are the obvious choice.

Developing four-stroke power, however, is a study in incrementalism. All the reciprocating parts create friction and heat that detract from performance. As a result of this dynamic, building up the power is best approached in stages.

These engines are, in essence, many parts that together create a whole. If all the parts work in unison and in concert, large increases in reliable power occur. If only a few pieces of the whole are installed, you may create more problems than you will solve. All the pieces have to work together, or you will concentrate stress loads and other negatives into specific areas, possibly ending with a catastrophic engine failure.

At Yoshimura, we have been building four-stroke racing engines for over 60 years. We understand that your engine is the sum of many parts. We do not simply throw a big cam in, pop up the compression, and create a time bomb. Depending on which stage of engine modification you choose, we build power at self-sustaining, balanced levels. There is no guessing here.

STAGE 1 PACKAGE

INCLUDED LABOR

  • Disassemble, Inspect, and Re-assemble Motor
  • Valve Job
  • Mill Cylinder Head to optimize compression ratio

INCLUDED COMPONENTS

  • Cylinder Head Gasket
  • OEM Valve Springs
  • Valve Seat Shims
  • New Bearings, Gaskets, Circlips

ADDITIONAL OPTIONS

  • Port and Polish Cylinder Head with Valve Job
  • Precision Machined Valve Cotters

STAGE 2 PACKAGE

INCLUDED LABOR

  • Disassemble, Inspect, and Re-assemble Motor
  • CNC porting / valve job
  • Mill Cylinder Head to optimize compression ratio

INCLUDED COMPONENTS

  • Yoshimura camshaft set
  • Forged high-compression pistons
  • Performance Cylinder Head Gasket
  • Yoshimura performance valve springs
  • Valve Seat Shims
  • New Bearings, Gaskets, Circlips
  • Works Edition Engine Plug Kit

ADDITIONAL OPTIONS

  • Precision Machined Top Retainers
  • Precision Machined Valve Cotters
  • Install High Performance Valve Seats
  • Lighten / Polish and Balance Crankshaft

STAGE 3 PACKAGE

INCLUDED LABOR

  • Disassemble, Inspect, and Re-assemble Motor
  • CNC Porting / Valve Job
  • Install High Performance Valve Seats
  • Mill Cylinder Head to optimize compression ratio
  • Lighten / Polish and Balance Crankshaft

INCLUDED COMPONENTS

  • Yoshimura camshaft set
  • Forged High-Compression Pistons
  • Performance Cylinder Head Gasket
  • Yoshimura Performance Valve Springs
  • Valve Seat Shims
  • Ceramic Hybrid Transmission Bearings
  • New Bearings, Gaskets, Circlips
  • Works Edition Engine Plug Kit

ADDITIONAL OPTIONS

  • Titanium Connecting Rods
  • Oversize Titanium Intake Valves
  • Oversize Titanium Exhaust Valves
  • Precision Machined Top Retainers
  • Precision Machined Valve Cotters

VP racing fuels logo
Motul Logo

We recommend the use of VP Racing Fuels, and MOTUL chemicals and lubricants for all of our engine builds


FOR MORE INFORMATION CONTACT:

Rhett Lougheed
Engine Building Services

5420 Daniels St Chino, CA 91710
Phone: (909) 364-0186 ext: 301
E-mail: rlougheed@yoshimura-rd.com

 

Don Franzen
Technical Sales Representative

5420 Daniels St, Chino, CA 91710
Phone: (909) 628-4722 ext: 422
E-mail: dfranzen@yoshimura-rd.com

 

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Race series product restriction and affirmation

Warning:

The RACE SERIES product you are purchasing removes, renders inoperative, or bypasses required elements of the emission control systems of EPA, certified motorcycles of motorcyle engines and may only be installed on motorcycles that are restricted to closed course competition. Installation of this product on a motorcyle that is ridden on a public street, highway, or public lands violates the tampering and defeat device provisions of the Clean Air Act & 203(a)(3)(A) and/or & 203(a)(3)(B) and may subject you to a civil penalty of up to $37,000.

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By clicking below, I affirm:
  1. that i have read the above warning;
  2. that any information I have entered is accurate; and
  3. that any motorcycle on which I install the RACE SERIES product will be restricted to closed course competition and will not be ridden on any public street, highway or public lands.