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05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit

$146.66

Original: $488.88

-70%

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit—

$488.88

$146.66

The Story

845M05400, PK1571, CW20011, B1001, C3105, 1C3-11311-21-00, 1C3-11311-00-00, 1C3-11631-03-B0, 1C3-11631-03-A0, 1C3-11311-2100, 1C3-11631-01-D0, 1C3-11631-03-D0, 93450-16812-00, 93450-16068-00, 93310-21510-00, P400485100030, 8055681301023, S4C05800001B, 810641, NX-40009T, P4004855600118, RE905M05400, 846M05400

Complete Yamaha YZ125X Top End Rebuild Kit - Wiseco Performance Parts

Restore peak power to your Yamaha YZ125 (2005-2021) or YZ125X (2000–2022) with the Wiseco-powered Top End Rebuild Kit. Includes forged piston, Cometic gasket, and stock bore cylinder for maximum durability and performance

Fits Yamaha YZ125 2 Stroke Dirt Bikes

Years 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021

Also Fits Yamaha YZ125X Years 2020 2021 2022

High-Performance Wiseco Forged Piston: Built for Power

At the heart of this top-end rebuild kit is the Wiseco Pro-Lite Forged Piston Kit. Known for unmatched strength and reliability, Wiseco pistons are lightweight yet incredibly robust, delivering increased horsepower and maximum durability under extreme stress. Paired with high-quality piston rings and wrist pins, your Yamaha YZ125 will roar back to life with heightened responsiveness and power output.

Why This Top End Kit Dominates:

Aftermarket 54mm Stock Bore Nikasil Cylinder: Highly durable, extends cylinder life significantly, and delivers reliable performance even under heavy motocross or trail use.

Forged pistons resist wear and withstand high temperatures better than cast pistons.

Improved compression seal for more consistent power delivery.

Includes piston, pin, rings, and retaining clips—all built for high-performance applications.

Cometic gaskets ensure a perfect seal for long-term reliability.

One-year warranty gives you peace of mind that you're investing in a premium product.*

BPRATV - The Best Parts. The Best Performance. The Best Price.

BRAPPPPPPPPPP!

5MV-11111-00-00 5HD-1131D-10-00 5HD-1132D-10-00 5NY-11311-11-00 90116-08394-00 93210-63442-00 90201-080L8-00 90176-08026-00 4XM-11633-10-00 5NY-11611-00-00 5NY-11631-01-A0 5NY-11631-01-B0 5NY-11631-01-C0 5DH-11351-01-00 90116-08318-00 90116-08388-00 99590-10114-00

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 2

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 3

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 4

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 5

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 6

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 7

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 8

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 9

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 10

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 11

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 12

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 13

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 14

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 15

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 16

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 17

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 18

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 19

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 20

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 21

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 22

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 23

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit - Image 24

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

Description

845M05400, PK1571, CW20011, B1001, C3105, 1C3-11311-21-00, 1C3-11311-00-00, 1C3-11631-03-B0, 1C3-11631-03-A0, 1C3-11311-2100, 1C3-11631-01-D0, 1C3-11631-03-D0, 93450-16812-00, 93450-16068-00, 93310-21510-00, P400485100030, 8055681301023, S4C05800001B, 810641, NX-40009T, P4004855600118, RE905M05400, 846M05400

Complete Yamaha YZ125X Top End Rebuild Kit - Wiseco Performance Parts

Restore peak power to your Yamaha YZ125 (2005-2021) or YZ125X (2000–2022) with the Wiseco-powered Top End Rebuild Kit. Includes forged piston, Cometic gasket, and stock bore cylinder for maximum durability and performance

Fits Yamaha YZ125 2 Stroke Dirt Bikes

Years 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021

Also Fits Yamaha YZ125X Years 2020 2021 2022

High-Performance Wiseco Forged Piston: Built for Power

At the heart of this top-end rebuild kit is the Wiseco Pro-Lite Forged Piston Kit. Known for unmatched strength and reliability, Wiseco pistons are lightweight yet incredibly robust, delivering increased horsepower and maximum durability under extreme stress. Paired with high-quality piston rings and wrist pins, your Yamaha YZ125 will roar back to life with heightened responsiveness and power output.

Why This Top End Kit Dominates:

Aftermarket 54mm Stock Bore Nikasil Cylinder: Highly durable, extends cylinder life significantly, and delivers reliable performance even under heavy motocross or trail use.

Forged pistons resist wear and withstand high temperatures better than cast pistons.

Improved compression seal for more consistent power delivery.

Includes piston, pin, rings, and retaining clips—all built for high-performance applications.

Cometic gaskets ensure a perfect seal for long-term reliability.

One-year warranty gives you peace of mind that you're investing in a premium product.*

BPRATV - The Best Parts. The Best Performance. The Best Price.

BRAPPPPPPPPPP!

5MV-11111-00-00 5HD-1131D-10-00 5HD-1132D-10-00 5NY-11311-11-00 90116-08394-00 93210-63442-00 90201-080L8-00 90176-08026-00 4XM-11633-10-00 5NY-11611-00-00 5NY-11631-01-A0 5NY-11631-01-B0 5NY-11631-01-C0 5DH-11351-01-00 90116-08318-00 90116-08388-00 99590-10114-00

05-22 Yamaha YZ125 YZ 125X 54mm 54 Stock Bore Cylinder Wiseco Piston Top End Kit | BPRATV