101 Octane 09210941 CrankshaftRef : OCTA00271A / 09210941

Manufacturer Ref: BT7001-16 — Brand: 101 OCTANE

Replacement crankshaft designed for 4T GY6 engines (reference 139QMB/QMA) with displacements from 50 to 90 cm³. Delivered pre-assembled with the main bearings and the connecting rod, this crankshaft is installed as a spare part for engines equipped with the 16-tooth oil pump drive sprocket. Ideal for urban use on scooters and small displacements where parts availability is essential.

Key points:

• Compatibility: 4T 50/90cc GY6 type engines (139QMB/QMA) with 16-tooth sprocket.
• Delivery: complete crankshaft, pre-assembled with connecting rod and main bearings.
• Warning: some GY6 engines come in two versions — 16-tooth sprocket (old version) and 22-tooth sprocket (new models like some Rex). Count the teeth on the oil pump side sprocket and compare with the photo to check compatibility before installation.
• Usage: compatible with a wide range of urban scooters requiring an equivalent original spare part.

Examples of common compatible models:

• BAJA SC 50 Suncity R (2021)
• GENERIC (KSR MOTO) PANDORA 50 (2020)
• KYMCO LIKE 50 4T (KG10AA) (2018)

Always check the number of teeth on the sprocket and the engine reference before ordering to ensure a hassle-free installation.