GiPP Billet 13B (S4) Rear Counterweight
The GiPP Billet 13B Series 4 Rear Counterweight is a premium replacement designed for high-performance and racing rotary engine builds. Based on the Series 4 counterweight design, this version features the heavier mass that many professional engine builders prefer, as it provides additional material to work with when precision balancing high-RPM race engines.
CNC machined from billet material, these counterweights feature exceptional machining quality and finish, easily among the best available on the market. The increased material and precision manufacturing allow engine builders to accurately balance rotating assemblies for demanding applications where reliability and smooth operation are critical.
Whether you are assembling a performance street engine or a dedicated race build, this counterweight provides the strength, consistency, and machining accuracy expected from a premium rotary engine component.
Features
Precision CNC machined billet construction
Series 4 (S4) style rear counterweight
Heavier mass design preferred by many race engine builders
Additional material allows for precise engine balancing
Exceptional machining quality and surface finish
Suitable for high-performance and motorsport applications
Suitability
Mazda 13B rotary engines using S4 counterweight configuration
Commonly used in high-performance and racing engine builds
Note:
Professional engine assembly and balancing recommended when installing any rotating assembly components
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