20 Best Yamaha Yzf 125 Big Bore Kit [2024]

Are you looking for the best Yamaha Yzf 125 Big Bore Kit? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling Yamaha Yzf 125 Big Bore Kit.

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1 ORAEVY Piston Rings Gasket Set 52.4mm Bore Replacement for 110cc 125cc Kazuma Taotao Sunl Coolster... ORAEVY Piston Rings Gasket Set 52.4mm Bore Replacement for 110cc 125cc Kazuma Taotao Sunl...
2 XMT-MOTO Cylinder Piston Rings Top End Kit fits for Yamaha TTR125 TTR 125 TTR-125 2000 2001 2002... XMT-MOTO Cylinder Piston Rings Top End Kit fits for Yamaha TTR125 TTR 125 TTR-125 2000 2001 2002...
3 WFLNHB Carburetor Carb Primer Kit Replacement for Yamaha Wave Raider Venture Gp1200 Gp1200r Xl1200... WFLNHB Carburetor Carb Primer Kit Replacement for Yamaha Wave Raider Venture Gp1200 Gp1200r...
4 Piston Rings Gasket Set 52.4mm Bore Replacement for Kazuma Taotao Sunl Coolster Roketa BMS SSR 110cc... Piston Rings Gasket Set 52.4mm Bore Replacement for Kazuma Taotao Sunl Coolster Roketa BMS SSR...
5 Bruce & Shark Cylinder Piston Rings Top End Kit Set for Yamaha TTR 125 TT-R 125 LE 2000-2005 Bruce & Shark Cylinder Piston Rings Top End Kit Set for Yamaha TTR 125 TT-R 125 LE 2000-2005
6 Complete GY6 Cylinder Head Rebuild Kits with valves, Trkimal 57.4mm 150cc Big Bore Upgrade Kits for... Complete GY6 Cylinder Head Rebuild Kits with valves, Trkimal 57.4mm 150cc Big Bore Upgrade Kits...
7 JINFANNIBI Cylinder Piston Ring Gasket Top End Rebuild Kit Compatible for Honda Recon 250 Sportrax... JINFANNIBI Cylinder Piston Ring Gasket Top End Rebuild Kit Compatible for Honda Recon 250...
8 NIBBI Racing Performance Motorcycle Carburetor 26mm GY6 125CC Carburetor PE26mm With Carburetor Jets... NIBBI Racing Performance Motorcycle Carburetor 26mm GY6 125CC Carburetor PE26mm With Carburetor...
9 Specbolt Fasteners 250pc Maintenance Restoration OE Spec Motorcycle Bolt Kit for Yamaha YZF 250 400... Specbolt Fasteners 250pc Maintenance Restoration OE Spec Motorcycle Bolt Kit for Yamaha YZF 250...
10 52.4mm Engine Cylinder Body With Gaskets Piston For 90cc 110cc 125cc Horizontal Engines ATV Quad... 52.4mm Engine Cylinder Body With Gaskets Piston For 90cc 110cc 125cc Horizontal Engines ATV Quad...
11 Athena (P400485100008) 54mm 125cc Standard Bore Cylinder Kit Athena (P400485100008) 54mm 125cc Standard Bore Cylinder Kit
12 LOSTAR Complete Gasket + Oil Seal Kit Top/Bottom End Set for 1988-2006 Yamaha Blaster 200 YFS200 LOSTAR Complete Gasket + Oil Seal Kit Top/Bottom End Set for 1988-2006 Yamaha Blaster 200 YFS200
13 Hopider CNC Wide Foot Pegs MX for YZ85 2002-2019, YZ125 1997-2017, YZ250 1998-2019, YZ250F... Hopider CNC Wide Foot Pegs MX for YZ85 2002-2019, YZ125 1997-2017, YZ250 1998-2019, YZ250F...
14 BBR Motorsports 120cc Big Bore Kit with Cam 411-HXR-1001 BBR Motorsports 120cc Big Bore Kit with Cam 411-HXR-1001
15 BBR Motorsports 150CC Big Bore Kit W/Cam for Yamaha TT-R125 BBR Motorsports 150CC Big Bore Kit W/Cam for Yamaha TT-R125
16 GOOFIT Performance Big Bore Cylinder Kit GY6 80cc 47mm for 139QMB ATV Scooter Moped Go Kart GOOFIT Performance Big Bore Cylinder Kit GY6 80cc 47mm for 139QMB ATV Scooter Moped Go Kart
17 NIBBI Racing Parts Original Replacement High Performance Speed Modified Carburetor Kit PE26MM GY6... NIBBI Racing Parts Original Replacement High Performance Speed Modified Carburetor Kit PE26MM GY6...
18 GOOFIT 57.4mm Bore Cylinder Kit with Piston for 4 Stroke GY6 150cc ATV 157QMJ Engine GOOFIT 57.4mm Bore Cylinder Kit with Piston for 4 Stroke GY6 150cc ATV 157QMJ Engine
19 BBR Motorsports 150cc Big Bore Kit with Cam 411-YTR-1201 BBR Motorsports 150cc Big Bore Kit with Cam 411-YTR-1201
20 Topteng Motorcycle Cylinder Piston Kit, Cylinder Piston Rings Top End Kit Set fits for Yamaha TTR... Topteng Motorcycle Cylinder Piston Kit, Cylinder Piston Rings Top End Kit Set fits for Yamaha TTR...
Bestseller No. 1
ORAEVY Piston Rings Gasket Set 52.4mm Bore Replacement for 110cc 125cc Kazuma Taotao Sunl Coolster...
  • Product parameters:Piston Bore Size is 52.4mm. Wrist Pin Diameter: 13mm;Piston Pin Diameter is 13mm, pin length 41mm
  • Perfect match: For all major Chinese 110cc and 125cc engine ATV,Dirt Bike, Pit Bike,Go Kart,Pocket Bike use this size piston. such as Kazuma Taotao...
  • Other spare parts:Apart from110cc 4-stroke Piston with Ring, Pin and G-ring,Piston Rings Gasket. At the same time, we also have intimately equipped...
  • Package includes: 1*52.4mm Piston,3*Piston Rings ,2*Piston Rings Gasket , 1*Piston Pin, 2*G-ring,2*Electric start oil seal,1*clutch oil seals,2*valve...
  • Professional after-sales:ORAEVY sell professional auto parts and provide free technical support. We value your shopping experience and strive to...
Bestseller No. 2
XMT-MOTO Cylinder Piston Rings Top End Kit fits for Yamaha TTR125 TTR 125 TTR-125 2000 2001 2002...
  • Aftermarket Parts 100% Brand New
  • Color: As Shown In the Picture.
  • Package included : 1 x Cylinder Piston Gasket Top End Kit
  • fits for Yamaha TTR125 TTR 125 TTR-125 2000-2005
  • With always fast and free shipping on every order,focusing on Quality and Service,so you can shop with confidence
Bestseller No. 3
WFLNHB Carburetor Carb Primer Kit Replacement for Yamaha Wave Raider Venture Gp1200 Gp1200r Xl1200...
  • Replacement for Yamaha / Polaris / Kawasaki / Sea-Doo with sbn triple carbs
  • Replacement for Wave Raider 1100 1995-1996 / Replacement for Wave Venture 1100 1996-1997 / Replacement for Gp1200 1997-1999 / Replacement for Gp1200r...
  • Replacement for Xl1200 1998-2001 / Replacement for 1200 Xl Ltd 1999 / Replacement for Xlt1200 2002-2003 / Replacement for Suv1200 1999-2003
  • Replacement for Super BN and BNI series 38 / 40 / 44 / 46 Carbs
  • Package include: as picture shows
Bestseller No. 4
Piston Rings Gasket Set 52.4mm Bore Replacement for Kazuma Taotao Sunl Coolster Roketa BMS SSR 110cc...
  • 180 days warranty and 100% money back if not satisfied.
  • Piston Bore Size is 52.4mm. Wrist Pin Diameter: 13mm
  • Piston Pin Diameter is 13mm, pin length 41.4mm
  • Chinese 110cc and 125cc engine use this size piston, you MUST measure and match the piston diameter 52.4mm before purchase.
  • Please note, a lot of Chinese-made 125cc engine also use this piston, to be sure, please measure your bore size, it needs to be 52.4mm.
Bestseller No. 5
Bruce & Shark Cylinder Piston Rings Top End Kit Set for Yamaha TTR 125 TT-R 125 LE 2000-2005
  • 【Note】Please check out the size and product to confirm the compatibility before purchasing.
  • 【Material】Made by high quality material aluminum, anti-rust,anti-corrosion and not easy broken. After a few months is still as good as new
  • 【Installation】Easy to install, you could directly replace it, professional installtion is recomendated.
  • 【Package】Please check the product images, what you receive is the same as the pictures, Please allow 1-3mm difference due to manual measurement.
Bestseller No. 6
Complete GY6 Cylinder Head Rebuild Kits with valves, Trkimal 57.4mm 150cc Big Bore Upgrade Kits for...
  • 【Cylinder Bore】: 57.4mm / Non-EGR Cylinder body
  • 【Full sets of parts】: Complete parts is suitable for motorcycle maintenance shop, motorcycle parts supermarket and personal use with nice price.
  • 【Apply to】: GY6 4 stroke 125cc/150cc engine for most of chinese scooter, atv and go karts
  • 【Parts included】:GY6 150cc Cylinder Head Comp, 57.4mm Bore Cylinder Block, Set of 57.4mm Piston Assy, Piston, Rings and Wrist Pin, Full Set of...
Bestseller No. 7
JINFANNIBI Cylinder Piston Ring Gasket Top End Rebuild Kit Compatible for Honda Recon 250 Sportrax...
  • Compatible with Honda Recon 250 1997-2020
  • Compatible with Honda Sportrax 250 2001-2008
  • Compatible with Honda TRX250X 2009-2019
  • Each Part is Manufactured Using the Best Materials and High Technology to Assure Long Engine Life and the Most Efficient Performance
  • Package:1 x Cylinder 1 x Piston Kit 1 x Piston Ring Set 1 x Gasket Kit 1 x Spark Plug
Bestseller No. 8
NIBBI Racing Performance Motorcycle Carburetor 26mm GY6 125CC Carburetor PE26mm With Carburetor Jets...
  • NIBBI PE Carburetor is refined to perfection and has set the standard among scooter and motocross racing carburetors.
  • Chromed round-flat throttle valve for excellent response and more flow at high RPM
  • Available in four popular sizes to cover all your horsepower requirements.
  • Easy tuning with jetting parts.
Bestseller No. 9
Specbolt Fasteners 250pc Maintenance Restoration OE Spec Motorcycle Bolt Kit for Yamaha YZF 250 400...
  • 250 pieces of original factory fit flange bolts, nuts, special Yamaha fasteners, and fender washers
  • Yamaha OEM type; Strong heat treated 8.8 & 10.9 grade bolts that meet and exceed original specs
  • Big assortment of OEM style fasteners, sprocket bolt set, square fender nuts, and fork guard bolts
  • Used for maintenance, repair, upkeep, and or partial restoration of YZF250 YZF 400 YZF426 YZF450
  • Complete and organized in a tough 18 compartment heavy duty poly storage box
Bestseller No. 10
52.4mm Engine Cylinder Body With Gaskets Piston For 90cc 110cc 125cc Horizontal Engines ATV Quad...
  • 【Tips】OEM Design 52.4mm Cylinder Body,Special For Aftermarket.Before Ordering,Please Check For The Details To Make Sure This Part Will Fit.
  • 【FIT FOR】Engine Cylinder Body Assy Fits Most Chinese 4 Stroke 110cc...
  • 【Advantage】Strict Selection Of Materials, Precision Processing, OEM Design Ensures Perfect Fitment With Every Installation.The Price Just Part Of...
  • 【Features】 Cylinder Diameter : 52.4mm; Bolt Hole Spacing: 48mm x 50mm(1.89"x1.97");Bolt Hole Diameter:8mm/0.31"; Piston Diameter: 52mm; Piston Pin...
  • 【After-Sales Service】All Of The Goods Are Backed By 1 Year’s Carefree Return,If Defective During Our Warranty Period, 100% MONEY BACK...
Bestseller No. 11
Athena (P400485100008) 54mm 125cc Standard Bore Cylinder Kit
  • Package Dimensions :33.02 Cm L X21.082 Cm W X15.494 Cm H
  • Product Type :Powersports Vehicle Part
  • Contracted From Aluminum, The Cylinder Is Lined With A Nickel-Carbide Coating For Durable, Reliable Performance
  • Built From Race Proven Designs To Yamaha Factory Specifications
  • Chosen By The Top Race Teams In All Forms Of Racing Including Super Cross, Motocross, Gncc, Superbike, And More
Bestseller No. 12
LOSTAR Complete Gasket + Oil Seal Kit Top/Bottom End Set for 1988-2006 Yamaha Blaster 200 YFS200
  • ✅Premium Quality, Direct Fit, 1-3 Days Delivery
  • ✅Compatibility: 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 Ya-maha Blaster 200
  • ✅Enhance Performance. Easy Installation. High Reliability.
  • ✅Brand new with good performance
  • ✅1 Year Unlimited-mileage Quality Guarantee
Bestseller No. 13
Hopider CNC Wide Foot Pegs MX for YZ85 2002-2019, YZ125 1997-2017, YZ250 1998-2019, YZ250F...
  • Fitment: Compatible with YZ65 2018, YZ85 2002-2019, YZ125 1997-2017, YZ250 1998-2019, YZ250F 2001-2019, YZ426F 2000-2002, YZ450F 2003-2019, YZ125X...
  • Durable and Light Weight: The foot pedals made of 7075-T6 Aluminum, one of the highest strenght alloys, can afford over 600KG pressure
  • Strong Skid Control and Grip: This kind of Foot Pegs are full of stainless steel screw-tooth that providing the rider with the ultimate grip and anti...
  • Anodized: This motorcycle foot rest is anodized finishes to prevent from oxidizing and scratches which increases resistance to corrosion and wear
  • Extra Wide Platform: The foot pegs base is 57mm wide and 88mm length. (Width: 2 1/4 inches, Length: 3 1/2 inches). Extra wide platform delivers solid...
Bestseller No. 14
BBR Motorsports 120cc Big Bore Kit with Cam 411-HXR-1001
  • Kit Includes: BBR aluminum cylinder, piston, rings, piston pin, clips, performance camshaft, heavy-duty valve springs, rockers with tappet adjusters...
Bestseller No. 15
BBR Motorsports 150CC Big Bore Kit W/Cam for Yamaha TT-R125
  • New aluminum cylinder with steel liner is bored, honed and ready to assemble
  • New high performance camshaft included
  • Comes with piston, rings, clips, head and base gaskets
  • Complete kit requires no exchange
Bestseller No. 16
GOOFIT Performance Big Bore Cylinder Kit GY6 80cc 47mm for 139QMB ATV Scooter Moped Go Kart
  • Inner Diameter of Cylinder: 47mm,Outer Diameter of Piston Pin: 13mm
  • Include Cylinder,Piston,Piston Ring,Piston Pin,Piston Pin Clip,Valve Oil Seal,Gaskets,Tensioner Gasket,Exhaust Gasket,Intake&Exhaust Studs,Exhaust Nut
  • One week money back guarantee if not satisfied
  • Easy installation with video instruction,you can visit the video on our Facebook homepage and Youtube.
  • High Performance Upgrade 47mm Cylinder Rebuild Kit for GY6 49cc 50cc 60cc 80cc engine
Bestseller No. 17
NIBBI Racing Parts Original Replacement High Performance Speed Modified Carburetor Kit PE26MM GY6...
  • 1.NIBBI PE Carburetor is refined to perfection and has set the standard among scooter and motocross racing carburetors.
  • 2.Chromed round-flat throttle valve for excellent response and more flow at high RPM.
  • 3.Available in four popular sizes to cover all your horsepower requirements.
  • 4.Easy tuning with jetting parts.
  • 5.Fit for 2T and 4T engine.
Bestseller No. 18
GOOFIT 57.4mm Bore Cylinder Kit with Piston for 4 Stroke GY6 150cc ATV 157QMJ Engine
  • Inner diameter of cylinder:57.4mm/22.6",hole spacing:54mm/2.12",outer diameter of piston pin:15mm/5.9"(as the picture shows)
  • Replacement for 4 stroke GY6 150cc 152QMI 157QMJ engine
  • Fits the 157QMJ engines with the EGR head,76mm bolt pattern 2 1/2" tall head
  • Package including cylinder head,gaskets,piston,piston rings,clips,wrist pin
  • Warranty:We are always available to help our customers.If you are not satisfied with the order,please leave us a message.Wish you to have a happy...
Bestseller No. 19
BBR Motorsports 150cc Big Bore Kit with Cam 411-YTR-1201
  • Bores into stock cylinder
  • Kit Includes: Aluminum BBR cylinder, piston, rings, piston pin, clips, performance camshaft and gasket kit
Bestseller No. 20
Topteng Motorcycle Cylinder Piston Kit, Cylinder Piston Rings Top End Kit Set fits for Yamaha TTR...
  • Please confirm the part number before ordering. A complete top end kit is offered.
  • Engineered and Tested to Meet or Exceed Original Equipment Standards and Performance.
  • This kit is designed specifically for the DIY (Do It Yourself) mechanic. Cylinder is a Cast Aluminum 54.00mm Standard Bore Replacement with Steel...
  • Forged Piston With 11:1 Compression Ratio. Our Gaskets are all top quality and will keep a perfect seal between all of the components.
  • The cylinder is cleaned, bored and honed to the specific clearances for the piston you receive in the kit. This kit includes a cylinder, piston,...

Having trouble finding a great Yamaha Yzf 125 Big Bore Kit?

This problem is well understood by us because we have gone through the entire Yamaha Yzf 125 Big Bore Kit research process ourselves, which is why we have put together a comprehensive list of the best Yamaha Yzf 125 Big Bore Kits available in the market today.

After hours of searching and using all the models on the market, we have found the best Yamaha Yzf 125 Big Bore Kit for 2023. See our ranking below!

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  • Is it worth buying an Yamaha Yzf 125 Big Bore Kit?
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How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available Yamaha Yzf 125 Big Bore Kit currently available on the market.

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  1. Brand Value: Every brand of Yamaha Yzf 125 Big Bore Kit has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an Yamaha Yzf 125 Big Bore Kit?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your Yamaha Yzf 125 Big Bore Kit.
  5. Customer Ratings: Number ratings grade Yamaha Yzf 125 Big Bore Kit objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Yamaha Yzf 125 Big Bore Kit.
  7. Product Quality: You don’t always get what you pay for with an Yamaha Yzf 125 Big Bore Kit, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an Yamaha Yzf 125 Big Bore Kit is should be an indication of how long it will work out for you.

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FAQ:

Q: Should I buy a big bore kit for my YZ125?

A: If you already built up your YZ125 and have everything set the way you like it with custom parts, plastics, graphics, handlebars, etc, buying another dirt bike will take time to do all the same mods. So instead of buying a new dirt bike, going with a big bore kit will make it feel like a newer, better bike for a lot less.

Q: How do I make my Yamaha YZ125 into a yz144?

A: The easiest route to making your YZ125 a YZ144 would be to install the Athena big bore kit. It has everything you need, from piston and cylinder, to all the gaskets. It’s no more difficult to install than replacing the piston in your 2-stroke.

Q: What is the best kit for a YZ125?

A: This is it, the ONE and ONLY YZ167. It is our most asked about kit for the YZ125 and it has been for many years. This kit is very popular with Vet racers of all levels and works well no matter how you ride it. It can be lugged like a 250 or screamed like a 125, it does both equally well.

Q: Which YZ 125 pipe should I buy?

A: A stock YZ125 pipe is still a good choice if you want to save money. It’s also good to keep low-end and mid-range power, which is great for trail riding. A stock YZ 125 pipe won’t put out high peak horsepower numbers with a 144 kit, but you’ll have a lot of usable power.