Yamaha R3 Racing Camshafts
Yamaha R-3 High Lift Roadracing Camshafts 2015/Current - Image 2

Yamaha R-3 High Lift Roadracing Camshafts 2015/Current

Spears Racing just created a NEW race camshafts that gives the racer improved mid-range and top end Horsepower, without sacrificing low end ride-ability.

Increasing valve lift and duration on a two-cylinder motorcycle engine (parallel-twin configuration) can provide several performance benefits by improving airflow and combustion efficiency. Here’s a breakdown of the key advantages:

  • Enhanced Power Output: Greater lift allows the valves to open wider, while extended duration keeps them open longer, enabling more air and fuel to enter the combustion chamber. This boosts horsepower, particularly in the mid-to-high RPM range, making the engine more responsive and capable of higher peak performance.
  • Improved High-RPM Capability: With more duration, the engine can rev higher without losing efficiency, as the cam profile supports better volumetric efficiency in regions where the cylinder head flows the most air. This is especially useful for sportier riding or track applications on two-cylinder bikes.
  • Better Overall Engine Breathing: Increased lift and duration optimize the intake and exhaust processes, leading to more efficient combustion and potentially higher torque in the powerband where the cam is tuned​,this can compensate for design limitations and make the bike feel more aggressive.

$899.99

2 in stock (can be backordered)

SKU SP17-320 Categories , ,

Description

Yamaha R3 Racing Camshafts Hard Weld Spears Racing is the industry leader in designing and making racing components for decades for the “little Commuter Style Bikes” their continuous committed to excellence to advance as the industry changes. This commitment has resulted in more profiles specific to certain applications, proprietary treated camshafts with specific lobe/cam profiles are manufactured only for Spears Racing. Each of these aspects has been put through stringent research and development stages to ensure that our product will exceed your standards.

These cams are “CNC” cam ground on only brand New Yamaha OEM camshafts to Spears Racing specification numbers, these camshafts are welded up and reground Bearing Journals are Polished with the reliability and precision you come to expect from Spears Racing products.

These camshafts give the racer improved midrange and top end Horsepower, without sacrificing low end ride ability.

Race profile. these camshafts will need to be set up with the proper clearance ,this specification will come with the new camshafts and will need to rotate freely. These cams do not require the of aftermarket valve springs. These camshafts will performed better with an Exhaust System, and High Compression Piston. Check ALL clearances! Price Per Set (2).

These cams can be dropped in, but with the adjustable Spears Cam sprockets you will be able to degree them in to obtain the most power

Yamaha R3 Racing Camshafts Kit contains:

1 ea Intake camshaft

1 ea Exhaust camshaft

Cam card for camshaft specifications

Additional information

Weight 5.0 lbs

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