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All products have accurate in stock quantities listed, if it shows in stock it’s actually in stock!
Free Shipping on orders over $69.99 to the continental 48 (Alaska & Hawaii orders, call 402-214-0706 to order).
All products have accurate in stock quantities listed, if it shows in stock it’s actually in stock!
Wiseco

Wiseco Pro-Lite Piston Kit - 797M05400 Yamaha YZ 125 2002-2004

MPN: 797M05400
Wiseco

Wiseco Pro-Lite Piston Kit - 797M05400 Yamaha YZ 125 2002-2004

MPN: 797M05400
Availability:
Only 1 left!
Forged from high-silicon aluminum alloy for maximum strength and dependability Wiseco offers a complete range of popular piston models and years for both trail and racing applications Durability, longevity and increased horsepower Innovative forging design and piston skirt provide maximum horsepower and torque Features forged pistons, rings, wrist pins, and circlips These high-tech piston designs offer maximum compression ratios, ultra-stiff strutted forgings, and titanium nitride-coated rings, which all add up to more power that is sustained longer Each piston is E-Coated on the crown, ring grooves, and pin bore, for maximum wear resistance and protection from micro-welding, galling, and detonation GP Series parts generally have less machining on the outside, which helps seal up the bore for increased compression Additionally, boost ports are removed for a more predictable powerband and increased pull on the top end Cylinder sleeves must be purchased separately. Service intervals may be increased with Racer's Choice pistons over conventional Wiseco pistons, and are for expert racers and tuners only. Specs Product Name Piston Kit Compression Ratio Stock Piston Material Forged Units Kit Stroke Length 54,50 mm Piston Diameter 53.95 mm Skirt Coating Non-Coated Stroke Length 54.50 mm Bore - Oversize Standard Displacement 125 cc Engine Type 2-Stroke Model Pro-Lite Bore Size 54.00 mm Bore - Oversize Standard Piston Material 4032 Aluminum Alloy Riding Style Off-Road
Original price $160.95 - Original price $160.95
Original price
$160.95
$160.95 - $160.95
Current price $160.95

Product Details

Features

  • Forged from high-silicon aluminum alloy for maximum strength and dependability
  • Wiseco offers a complete range of popular piston models and years for both trail and racing applications
  • Durability, longevity and increased horsepower
  • Innovative forging design and piston skirt provide maximum horsepower and torque
  • Features forged pistons, rings, wrist pins, and circlips
  • These high-tech piston designs offer maximum compression ratios, ultra-stiff strutted forgings, and titanium nitride-coated rings, which all add up to more power that is sustained longer
  • Each piston is E-Coated on the crown, ring grooves, and pin bore, for maximum wear resistance and protection from micro-welding, galling, and detonation
  • GP Series parts generally have less machining on the outside, which helps seal up the bore for increased compression
  • Additionally, boost ports are removed for a more predictable powerband and increased pull on the top end
  • Cylinder sleeves must be purchased separately.
  • Service intervals may be increased with Racer's Choice pistons over conventional Wiseco pistons, and are for expert racers and tuners only.

Specs

Product Name Piston Kit
Compression Ratio Stock
Piston Material Forged
Units Kit
Stroke Length 54,50 mm
Piston Diameter 53.95 mm
Skirt Coating Non-Coated
Stroke Length 54.50 mm
Bore - Oversize Standard
Displacement 125 cc
Engine Type 2-Stroke
Model Pro-Lite
Bore Size 54.00 mm
Bore - Oversize Standard
Piston Material 4032 Aluminum Alloy
Riding Style Off-Road

Product Description

Features

  • Forged from high-silicon aluminum alloy for maximum strength and dependability
  • Wiseco offers a complete range of popular piston models and years for both trail and racing applications
  • Durability, longevity and increased horsepower
  • Innovative forging design and piston skirt provide maximum horsepower and torque
  • Features forged pistons, rings, wrist pins, and circlips
  • These high-tech piston designs offer maximum compression ratios, ultra-stiff strutted forgings, and titanium nitride-coated rings, which all add up to more power that is sustained longer
  • Each piston is E-Coated on the crown, ring grooves, and pin bore, for maximum wear resistance and protection from micro-welding, galling, and detonation
  • GP Series parts generally have less machining on the outside, which helps seal up the bore for increased compression
  • Additionally, boost ports are removed for a more predictable powerband and increased pull on the top end
  • Cylinder sleeves must be purchased separately.
  • Service intervals may be increased with Racer's Choice pistons over conventional Wiseco pistons, and are for expert racers and tuners only.

Specs

Product Name Piston Kit
Compression Ratio Stock
Piston Material Forged
Units Kit
Stroke Length 54,50 mm
Piston Diameter 53.95 mm
Skirt Coating Non-Coated
Stroke Length 54.50 mm
Bore - Oversize Standard
Displacement 125 cc
Engine Type 2-Stroke
Model Pro-Lite
Bore Size 54.00 mm
Bore - Oversize Standard
Piston Material 4032 Aluminum Alloy
Riding Style Off-Road

Part Numbers
Store SKU MFR. Product # Availability
797M05400 797M05400 In Stock
Fitment
This product is vehicle specific. Select your vehicle to confirm fitment.

This Product Fits

Fitment Disclosure

This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.

Features

  • Forged from high-silicon aluminum alloy for maximum strength and dependability
  • Wiseco offers a complete range of popular piston models and years for both trail and racing applications
  • Durability, longevity and increased horsepower
  • Innovative forging design and piston skirt provide maximum horsepower and torque
  • Features forged pistons, rings, wrist pins, and circlips
  • These high-tech piston designs offer maximum compression ratios, ultra-stiff strutted forgings, and titanium nitride-coated rings, which all add up to more power that is sustained longer
  • Each piston is E-Coated on the crown, ring grooves, and pin bore, for maximum wear resistance and protection from micro-welding, galling, and detonation
  • GP Series parts generally have less machining on the outside, which helps seal up the bore for increased compression
  • Additionally, boost ports are removed for a more predictable powerband and increased pull on the top end
  • Cylinder sleeves must be purchased separately.
  • Service intervals may be increased with Racer's Choice pistons over conventional Wiseco pistons, and are for expert racers and tuners only.

Specs

Product Name Piston Kit
Compression Ratio Stock
Piston Material Forged
Units Kit
Stroke Length 54,50 mm
Piston Diameter 53.95 mm
Skirt Coating Non-Coated
Stroke Length 54.50 mm
Bore - Oversize Standard
Displacement 125 cc
Engine Type 2-Stroke
Model Pro-Lite
Bore Size 54.00 mm
Bore - Oversize Standard
Piston Material 4032 Aluminum Alloy
Riding Style Off-Road