Athena 58mm Big Bore Cylinder Kit / Big Bore Complete Motor Rebuild Kit!
This is the best and most reliable rebuild kit on the market!
Fits Yamaha YZ125 2 Stroke Dirt Bikes
Years 1998 1999 2000 ONLY
Give your Yamaha YZ125 a new life with this complete engine rebuild kit! This top-quality kit includes everything you need to breathe powerful, reliable performance back into your 1998-2000 YZ125.
Athena 58mm big bore cylinder and piston kit provides OEM-level durability and power
Wiseco heavy duty crankshaft assembly with connecting rod and wrist pin bearing to boost engine life
Athena Cylinder Head & Dome
Athena Power Valve Kit & Cylinder Head Stud Kit
Athena Top Kit Gasket Kit
Koyo or NTN Main Crank Bearings, Made in Japan
Wiseco Complete Bottom End Engine Gasket Kit (Made by Cometic)
Wiseco Complete Motor End Seal Kit (Made by Cometic)
All parts covered by warranty for peace of mind*
Tired of lackluster performance from your tired, worn-out YZ125 engine? This complete rebuild kit packs a big punch, delivering stronger acceleration, higher revs and improved reliability so you can push your bike to the limit. Installing these premium parts will have your YZ125 running like new again.
Race-inspired quality plus a warranty you can count on - upgrade your YZ125 today!
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 93310-522P7-00 93310-52238-00 90209-22248-00 3JD-11681-10-00 5MV-11420-00-00 5MV-11410-00-00 5MV-11400-00-00 MV-11651-00-00
PROFESSIONAL INSTALLATION REQUIRED
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NOTICE REGARDING PHOTOS: Product photos uséd in our listings are for example only to show the high quality of our components. You will receive the correct quantity, size, and fitment of bearings, titanium fasteners, nuts, and bolts for the specific kit listed.
BEARING NOTICE: In some cases, you may receive SEALED bearings. If your application requires an OPEN bearing, the seals can easily be removed.
EMISSIONS & RACE USE ONLY: This product is exempt from emission standards and requirements of 40 C.F.R. § 1051 as provided by 40 C.F.R. § 1051.620, and California law [e.g., vehicle code §§ 27156 and 38391]. Sold ONLY for use with EPA-certified, purpose-built, nonroad vehicles uséd solely for closed course, nonroad competition/racing. Installation may void vehicle manufacturers' warranty and/or may be illegal in some locations.
RETURNS: Returns accepted within 30 days for items 100% complete, brand new, and in original packaging. Items installed or prepped (lubricated/sealed) are ineligible. For warranty consideration, parts MUST be sent back for physical inspection. No exceptions. We do not warranty based on photos, emails, or third-party assessments.
SPECIALTY WARRANTIES:Cub Cylinders: Lifetime warranty for original owner via BPRATV/Millennium Technologies inspection; covers cylinder only. Titanium Fasteners: Failure during use results in replacement only. Neither warranty covers improper tuning, installation, maintenance, or misuse.
INTERCHANGEABLE PARTS: We may substitute parts of equal quality from different manufacturers to prevent backorder delays. Prices and listings subject to change without notice.
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