SKU: 50220766636

Transmission / Gearbox

Sale price$17.10 Regular price$19.00
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 5 - Aug 10

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Description

Transmission / GearboxTransmission, or gear box for 40cc 4 stroke motors. Comes with the stock 11 tooth pinion gear attached. Typical symptoms that indicate a gearbox: Your bike started making a terrible rattling noise in the engine. Rear wheel is locked up, when pulling on the pull start the back wheel immediately starts spinning. To replace the gearbox, you have to remove the four screws that hold the transmission housing on to the engine. Use an 8mm socket wrench to

Transmission, or gear box for 40cc 4-stroke motors. Comes with the stock 11-tooth pinion gear attached.

Typical symptoms that indicate a gearbox:

  • Your bike started making a terrible rattling noise in the engine.
  • Rear wheel is locked up, when pulling on the pull start the back wheel immediately starts spinning.

To replace the gearbox, you have to remove the four screws that hold the transmission housing on to the engine. Use an 8mm socket wrench to remove the bolts and wiggle free the transmission case. 

While you're in there, look at the clutch. Sometimes the spring in the clutch breaks. Sometimes, the nut from the gear box falls off, and damages the clutch in the process.

If your spring broke, make sure you look carefully inside the engine cavity to make sure there are no pieces of the clutch spring remaining, before installing the new clutch.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 50220766636

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4.7 ★★★★★
Based on 10 reviews
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Shawn SnoMan Thompson
Waukegan, US
★★★★★ 5
For work or casual wear, this polo is a great choice.
Material Type: Recycled Polyester, Color: Port Stripe, Size: X-Large
I really like this polo. I've been wearing it once a week or every other week since November. Its very comfortable and breathable. This polo feels like it should last a while. The fit is good. I typcally wear XL and this XL fits great. I've pruchased it in both burgundy and black so far. I definitely recommend this shirt. For work or casual wear, this will look good.
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Reviewed in the United States on January 11, 2026
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Verified Purchase
Tech Dad
San Leandro, US
★★★★★ 5
Great value: These are my go-to work from home shirt
Material Type: Recycled Polyester, Color: Blue, Size: X-Large
I’ve been pleasantly surprised by these shirts and wear them weekly for Zoom calls, since I’m still working from home these days. I figured at the price point it was worth trying them out, and now I’ve bought several in different colors. They aren’t super soft, but they are comfy and look nice. I’m 6’1” ~220 pounds, and the XL slim fit still has plenty of room. I imagine the regular cut is incredibly boxy and oversized. The difference between polyester vs recycled polyester is inconsequential. I typically buy expensive golf shirts, and these definitely aren’t as nice. They are a fraction of the cost though and a great “beater” work shirt / hang out shirt. It’s nice wearing something that looks and feels decent, but if something happens to it, you can toss and it and pick up another for the cost of a chipotle burrito.
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Reviewed in the United States on May 29, 2022
E
Verified Purchase
Espresso
Houston, US
★★★★★ 3
Great price, not great quality
Material Type: Recycled Polyester, Color: Black, Size: Small
Simple, straight forward all black polo. I am a size medium woman (with some room since I don't like form-fitting) and bought a men's small. Fits perfectly for my frame. Long enough to tuck in for my part-time extra weekend job uniform. Also suitable for the golf course. A little thin, and if you hold it up to light you can sort of see through it. *Not* flowy, soft and smooth fabric like a rash guard/sun shirt - more structured than that. But it's cool and does the job for the price under $10.
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Reviewed in the United States on August 13, 2024
K
Verified Purchase
Ken Strech
West Palm Beach, US
★★★★★ 5
Recommend
Material Type: Recycled Polyester, Color: Dark Navy, Size: X-Large
Great fit, right price
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Reviewed in the United States on March 18, 2026
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Gwen
New York, US
★★★★★ 5
Nice polo
Material Type: Recycled Polyester, Color: Dark Teal, Size: Medium
Fantastic polo shirt. Size was true to fit. Color is amazing. It’s soft and it has held up through washes since Christmas.
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Reviewed in the United States on March 14, 2026

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