Wiseco Piston Kit, 39.00 mm for Cobra BM50 (698M03900)

The WISECO 698M03900 Piston Kit is designed for all-purpose two-stroke riding applications in the Cobra BM50. Built to support dependable engine performance, this piston kit combines durable construction with design features intended to improve longevity, strength, and throttle response. It is a practical replacement or performance-focused upgrade for riders who demand consistent operation from their two-stroke engine.
WISECO uses a dedicated forging design to optimize the balance between strength and weight. Additional lightening operations help reduce reciprocating mass, supporting enhanced throttle response and responsive engine performance. The piston is engineered, forged, and machined in the USA, reflecting WISECO’s focus on manufacturing precision and durable components for powersports applications.
Feature: Application-specific piston kit for the Cobra BM50
Feature: 39.00 mm piston size
Feature: Designed for all-purpose two-stroke riding
Feature: Dedicated forging design for strength-to-weight optimization
Feature: Extra lightening operations for enhanced throttle response
Feature: Engineered, forged, and machined in the USA
Feature: Piston made in the USA
The WISECO 698M03900 provides a carefully engineered fit and performance-oriented construction for compatible Cobra BM50 engine applications. Verify vehicle and engine compatibility before installation, and follow the manufacturer’s service procedures for piston inspection, clearance, assembly, and break-in. With its lightweight forged design and USA-based manufacturing, this WISECO piston kit is built to support reliable service and responsive two-stroke performance.

Features:

• Application-specific piston kit for the Cobra BM50

• 39.00 mm piston size

• Designed for all-purpose two-stroke riding

• Dedicated forging design for strength-to-weight optimization

• Extra lightening operations for enhanced throttle response

• Engineered, forged, and machined in the USA

• Piston made in the USA

Ships from Parts Unlimited.