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2019-2025 YAMAHA YZ250F - DEF RACING 80MM BIG BORE KIT 270cc **BACK IN STOCK**
$999.95
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Want extra peace of mind? Even if a seller doesn't offer returns,
MX Locker gives you the option to make any item returnable with Return Assurance at checkout.
MX Locker is 100% committed to ensuring that every sale ends in satisfaction—for both buyer and seller. Your payment is held until the item is delivered and approved. If it's not as described, you'll receive a full refund.
Every transaction is backed by our secure payment system. We hold funds until you confirm the item arrived in the promised condition—so you can shop worry-free.
MX Locker is 100% committed to ensuring that every sale ends in satisfaction—for both buyer and seller. Your payment is held until the item is delivered and approved. If it's not as described, you'll receive a full refund.
Every transaction is backed by our secure payment system. We hold funds until you confirm the item arrived in the promised condition—so you can shop worry-free.
Overview
Description
DYNAMIC RACING / 2019-2025 YAMAHA YZ250F 80mm 270cc BIG BORE KIT All in one bolt on kit! You can expect great power gains and awesome reliability with this kit! One standout feature of this piston kit is its innovative crown design, which enhances combustion efficiency and delivers improved power output. Combined with a custom DLC-coated wrist pin to reduce friction for improved power and extend piston life while also reducing wear on the small end of the connecting rod. Complete with specially designed rings, this kit ensures premium durability and performance. A COMETIC gasket kit is included that guarantees a reliable seal. Paired with a high-quality Cylinder Works cylinder this kit is incredibly reliable this kit makes some serious bolt on power! Kit Includes: -14.6:1 Compression Ratio JE Forged Piston -Cylinder Works 80mm Cylinder (This cylinder has thicker water jackets that prevents cylinder failures, unlike traditional big bores) -DLC Coated Wrist Pin: Reduces friction and maximizes durability and performance -Japanese Ring Pack: Provides a secure seal for enhanced performance -COMETIC 80mm head gaskets, cylinder gasket, valve guide seals, exhaust gasket and tensioner gasket For optimal performance we recommend pairing this kit with our Vortex ECU and custom maps.
Compatible with 21 Yamaha vehicle(s)Meet The Seller
Responds within 3 hours.
Ships within 3 business days.
Items match their descriptions.
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