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Athena Top End Race Gasket Kit Yamaha WR450F / YZ450F / YZ450FX

When working on a racing engine, adjusting the cylinder height is sometimes necessary to fine-tune the squish clearance, achieve the correct compression in the combustion chamber, or optimize valve timing. To address this, Athena technicians created the Race Gasket Kit, a comprehensive engine gasket solution designed for the most popular Motocross and Enduro applications, covering both 2T and 4T engines. The kit includes a cylinder head gasket and two cylinder base gaskets: one with the same thickness as the OEM part and another with a reduced thickness of 0.1 mm.

Features:

  • Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during mid-season
  • Kit includes a top-of-the line MLSS head gasket and two or more premium-quality base gaskets of different thicknesses to optimize engine compression ratios
  • Gives the rider a choice of using standard gas with stock compression or race gas with a higher compression
  • Kit does not include valve stem seals, rubber parts, shims or other fiber gaskets
Product Style RevZilla Item # Store Sku MFR. Product # Availability
Product Style Athena Top End Race Gasket Kit Yamaha WR450F / YZ450F / YZ450FX 2014-2018 RevZilla Item #10486597 Store Sku MFR. Product #R4856-188 AvailabilityIn Stock: Ships next business day

This product DOES NOT FIT your 2012 Aprilia RSV4 FACTORY APRC

This Product Fits
Yamaha
WR450F 2016, 2017, 2018
YZ450F 2014, 2015, 2016, 2017
YZ450FX 2016, 2017, 2018
This item is also available for 36 different vehicles. View All Models
Gas Gas
EC 250F 2013-2015
Honda
CRF250R 2010-2017
CRF250R 2018-2021
CRF250RX 2019-2021
Kawasaki
KX250 2020
KX250F 2020
KX250F 2009-2016
KX450 2019-2020
KX450F 2019-2020
KX450F 2016-2018
KX65 2000-2026
KX85 2014-2025
Suzuki
RM65 2003-2005
Yamaha
WR250F 2001-2012
WR250F 2020-2025
WR450F 2021-2023
YZ125 2005-2021
YZ250 1999-2026
YZ250 50th Anniversary Edition 2024
YZ250 70th Anniversary Edition 2026
YZ250F 2001-2013
YZ250F 2019-2026
YZ250F 50th Anniversary Edition 2024
YZ250F 70th Anniversary Edition 2026
YZ250F Monster Energy Race Edition 2021-2025
YZ250FX 2020-2025
YZ250 Monster Energy Race Edition 2023-2025
YZ250X 2016-2026
YZ450F 2020-2022
YZ450FX 2021-2023
YZ65 2018-2026
YZ80 1993-2001
YZ85 2019-2026
YZ85 2002-2018
YZ85 Big Wheel 2022-2026
YZ85 Big Wheel 2002-2015
Product Description
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