ProX Steel Intake Valve Conversion Set for Suzuki RM-Z250, Part 28.SIS3338-2

Latest addition to the ProX program is the Steel Intake and Exhaust Valve & Spring Kits. This kit is offered as an alternative where the OEM application uses Titanium valves. ProX has now developed the Steel Intake and Exhaust Valve & Spring Kits, containing a set of steel intake or exhaust valves plus a set of specially designed stronger valve springs. The ProX kit just replaces the OEM valves & valve springs and can be installed using the OEM retainers, bases and valve seals.

The ProX Steel Intake Valve Conversion Set, manufacturer part number 28.SIS3338-2 and vendor part number 19-9529, is designed for Suzuki RM-Z250 models from 2007 through 2016. This complete intake valve and spring kit provides a durable alternative for applications originally equipped with titanium valves. It replaces the OEM intake valves and valve springs while retaining the original OEM retainers, bases, and valve seals.

Built for demanding off-road and high-RPM use, the ProX kit combines nitrided steel intake valves with specially developed stronger valve springs. The nitrided valve surface provides high microhardness and a smooth finish that helps reduce friction between the valve stem and guide. Premium chrome vanadium steel springs are engineered to manage the additional weight of steel valves while supporting dependable performance and durability under extreme operating conditions.

Installation is designed to be straightforward and cost efficient, with no additional engine modifications required when using the applicable OEM retainers, bases, and seals. This kit is a practical choice for rebuilding or upgrading the cylinder head on compatible Suzuki RM-Z250 motorcycles.

Fitment: 2007-2016 Suzuki RM-Z250.

Features:

• Steel intake valve construction increases durability and reduces wear under extreme operating conditions
• Nitrided valve surface provides high microhardness and a smooth finish to reduce friction between the stem and guide
• Stronger valve springs compensate for the additional weight of steel valves
• Compatible with OEM retainers, bases, and valve seals for a rebuild without further engine modifications
• Premium chrome vanadium steel springs provide reliable performance and durability at high RPM
• Complete intake valve and spring package supports quick and efficient replacement

Fitment:
2007 Suzuki RM-Z250
2008 Suzuki RM-Z250
2009 Suzuki RM-Z250
2010 Suzuki RM-Z250
2011 Suzuki RM-Z250
2012 Suzuki RM-Z250
2013 Suzuki RM-Z250
2014 Suzuki RM-Z250
2015 Suzuki RM-Z250
2016 Suzuki RM-Z250
2017 Suzuki RM-Z250
2018 Suzuki RM-Z250
2019 Suzuki RM-Z250
2020 Suzuki RM-Z250
2021 Suzuki RM-Z250
2022 Suzuki RM-Z250
2023 Suzuki RM-Z250
2024 Suzuki RM-Z250
2025 Suzuki RM-Z250