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Genuine Piaggio 50cc Transmission Intermediate Lay Shaft Gear Z15-39 (289027)
Genuine Piaggio 50cc Transmission Intermediate Lay Shaft Gear Z15-39 (289027)
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Product Description
Factory-original primary gearbox intermediate lay shaft gear featuring a dual Z15/Z39 tooth count. Sits inside the rear gearbox hub/reduction transmission casing on early Piaggio 50cc engine blocks to transfer driven variator torque directly to the main wheel axle drive gear.
Vehicle Compatibility
Standard factory replacement fitment across early 50cc Piaggio Group rear gearbox assemblies:
| Make | Model | Chassis / Engine Variant | Model Years | Application |
| Piaggio | Zip 50 / Zip RST / Fast Rider | 50cc 2T (SSL1T / SSP1T / ZAPC06) | 1992–1999 | Gearbox Intermediate Lay Shaft Gear |
| Piaggio | Zip Base / Zip Bimodale | 50cc 2T (SSL1T) | 1992–1997 | Gearbox Intermediate Lay Shaft Gear |
| Gilera | Easy Moving 50 | 50cc 2T (SSP1T) | 1995–1999 | Gearbox Intermediate Lay Shaft Gear |
Fitment Details
Installs inside the rear gearbox crankcase reduction housing behind the clutch pulley shaft. Always replace the transmission shaft needle bearings, side shim washers, and housing gasket when opening the reduction casing. Fill with recommended SAE 80W-90 transmission oil upon reassembly.
Important: Please ensure the part number matches your motorbike before purchasing. If you have any questions about the part or its compatibility, feel free to contact us. We’re here to help!
At Dmmotorcycles, we’ve specialized in vintage and vintage sports motorcycles and parts directly from Japan since 1998. We stock a wide selection of rare genuine and high-quality aftermarket parts and continually update our inventory to meet growing demand.
Looking for a specific part? Don’t hesitate to ask! We may have it in stock even if it’s not listed online. If not, we’ll do our best to source it for you.
We’re also happy to provide guidance on installation and offer excellent after-sales support to ensure your satisfaction.
Shipping Information
We ship worldwide, carefully inspecting and securely packing all parts to ensure safe delivery. Your order will be insured and shipped quickly, with the best available shipping option chosen for speed and reliability.
Please note:
- All parts are shipped from Cyprus (Europe).
- Customers outside the EU may incur additional import taxes based on the value of the item.

How we handle your order in 4 steps
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1. Order Verification
We confirm the order and make sure the correct part number, quantity, and any special requests match what’s on the sales confirmation
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2. Quality Check
Since our parts are new old stock we Inspect the parts for any defects, scratches, or missing components to ensure it meets quality standards. otherwise will notify you before proceeding with the order.
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3. Safe and Secure packaging
- Protective Wrapping: We use bubble wrap or foam padding to wrap the part, focusing on sharp edges or delicate components.
- Boxing: We place the wrapped part inside a sturdy box, filling gaps with packing materials to prevent movement.
- Sealing and Labeling: Securely tape the box and attach the shipping label, including orientation-specific markers like "Fragile."
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4. Finalizing of Shipment
We confirm the shipping address and contact details, give the package to the Post, keep the tracking number, and then send it to the customer along with the shipment notification.