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Prima 4mm Main Jet Tuning Kit – Keihin PB & CVK Carburetors

Prima Keihin PB Main Jet Kit (4mm, 10 pcs); 139QMB, Gen 50cc

$25.67

SKU: 1300-1129 Category: Tag:

Out of stock

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Product Details

Description

Prima 4mm Main Jet Tuning Kit - Keihin PB & CVK Carburetors

Key Details

  • Original Parts For Scooters SKU: 114-49-10PCS

Specifications

  • Overall Length: 7mmnnJet Body Diameter: 5mmnJet Thread Size: M4 x 0.7mm fits 4mm main jet ports.n70 Main Jet Inner diameter: 0.70mm (70) nn75 Main Jet Inner diameter: 0.75mm (75) nn80 Main Jet Inner diameter: 0.80mm (80) nn85 Main Jet Inner diameter: 0.85mm (85) nn90 Main Jet Inner diameter: 0.90mm (90) nn95 Main Jet Inner diameter: 0.95mm (95) nn100 Main Jet Inner diameter: 1.00mm (100) nn105 Main Jet Inner diameter: 1.05mm (105) nn110 Main Jet Inner diameter: 1.10mm (110) nn115 Main Jet Inner diameter: 1.15mm (115)nnPackaging may vary from product photosnCompatibility:nnGenuine Buddy 50nGenuine Roughhouse 50nnnGenuine Rattler 50nGenuine Black Cat 50nnnChicago Scooter Co. go. 50nChicago Scooter Co. go. Max 50nnnChicago Scooter Co. Nitro 50nChicago Scooter Co. Bella 50nnnKeihin 50cc carburetorsn50cc CVK Style CarburetorsnnnPD18J CarburetorsnAnd many other PB and CVK-style carburetorsnnJetting takes trial and error to obtain optimal performance from your scooter. Many scooters are jetted lean from the factory to meet emissions requirements. Learn more on our Carburetor Jetting 101 page. Additionally, there are many good tutorials on how to properly jet a carburetor and you should refer to them to ensure you do not damage your engine by jetting too lean.About Prima: Prima is the industry leader in premium scooter accessories, service parts and scooterist protective apparel. Prima brand products are designed direct-fit for all popular scooter brands including Honda, Yamaha, Genuine, Vespa, SYM, Lance, KYMCO, Royal Alloy and GY6 / QMB powered scooters.nnSPECIFICATIONS: Specifications:nRound, Keihin PB style jetsnKit contains 10 different jet sizes: 70 - 115nOverall Length: 7mmnnJet Body Diameter: 5mmnJet Thread Size: M4 x 0.7mm fits 4mm main jet ports.n70 Main Jet Inner diameter: 0.70mm (70) nn75 Main Jet Inner diameter: 0.75mm (75) nn80 Main Jet Inner diameter: 0.80mm (80) nn85 Main Jet Inner diameter: 0.85mm (85) nn90 Main Jet Inner diameter: 0.90mm (90) nn95 Main Jet Inner diameter: 0.95mm (95) nn100 Main Jet Inner diameter: 1.00mm (100) nn105 Main Jet Inner diameter: 1.05mm (105) nn110 Main Jet Inner diameter: 1.10mm (110) nn115 Main Jet Inner diameter: 1.15mm (115)nnPackaging may vary from product photosnnnCOMPATIBILITY: Compatibility:nnGenuine Budd

Additional information

Weight 0.3 lbs
Dimensions 3 × 3 × 1 in

Compatibility / Fitment

Use the fitment details below to confirm this part matches your scooter before ordering.

  • Engine Size: 50cc, GY6
  • Fits Models / Common Applications: Genuine Buddy and other compatible models may apply.
  • Fitment Notes: Performance, Auto Transmission

Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible scooter. If your scooter has multiple versions or production changes, confirm the correct match before ordering. Check photos, measurements, original part numbers, engine code, model, and related fitment information whenever possible.

Common Fitment Questions

Q: Will this fit a Genuine?

A: This SKU is listed with Genuine model fitment where the scooter also matches the listed engine or fitment notes.

Q: Is this for 50cc scooters?

A: This SKU is listed with 50cc engine-size fitment. Confirm exact model, year, and part style before ordering.

Additional information

Weight 0.3 lbs
Dimensions 3 × 3 × 1 in
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