BWS100/ZUMA100 Bakelite Crankshaft Stroke 52mm(+4.2)
Bakelite Core. Extended Stroke.
Designed for the BWS 100 and ZUMA 100 engine, this Bakelite crankshaft features an extended stroke of 52mm — an increase of 4.2mm over the stock specification — for use in modified engine configurations. The crankpin contact area incorporates a bakelite material insert, distinguishing this variant from the full metal construction. The crankshaft body is precision-machined for consistent dimensional accuracy and stable engine operation. Confirm cylinder kit compatibility and engine build requirements before installation.
🔹 Highlights
- Bakelite Crankpin Insert — bakelite material applied at the crankpin contact area, a structural distinction from full metal variants
- 52mm Extended Stroke — 4.2mm increase over stock stroke specification for modified engine configurations
- Precision-Machined Construction — consistent dimensional accuracy supports stable engine assembly and operation
- BWS 100 / ZUMA 100 Fitment — dimensioned to match BWS 100 and ZUMA 100 engine specifications
- Single-Component Package — supplied as crankshaft only for engine build applications
✔ Product Specifications
- Type: Bakelite Crankshaft
- Stroke: 52mm (+4.2mm)
- Fitment: BWS 100 / ZUMA 100
- Focus: Engine stroke upgrade
- Package Includes: Crankshaft × 1
🔧 Installation Notes
- Confirm cylinder kit compatibility with the 52mm stroke specification before installation
- Engine crankshaft installation is recommended to be carried out by a technician with relevant experience
- Confirm piston clearance and compression seal integrity after assembly
- A proper engine break-in procedure is recommended before returning to normal operation
Power You Can Trust.