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YSR 21mm Carb Kit- Polini
YSR 21mm Carb Kit- Polini
YSR 21mm Carb Kit- Polini
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YSR 21mm Carb Kit- Polini

Marsoni M251S
Sale price$152.00
Pay 4 payments of $38.00 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
YSR 21mm Carb Kit- PoliniPolini's famous round slide, Italian made CP21 carb, not previously offered for the YSR50. This is a killer option for your stock, or mildly tuned setup. Comes complete with everything you need for tuning! Kit Includes: Polini 21MM Carb Polini Main Jet Kit (80 98) Pilot Jet Kit (32,34,36,38,40) 48mm filter (includes straight, 30, and 90 degree adapters) Team Calamari YSR50 CNC Intake Manifold 23mm Manifold Adapter 1 4 Turn YSR Throttle Cable M10x1. 25
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  • Fast: 2-3 business days
  • Express: 1-2 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
4.8 ★★★★★
Based on 216 reviews
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Product Reviews
R
Verified Purchase
Rose A
Fort Morgan, US
★★★★★ 5
Great weekender
Color: Beige, Size: 17 Inch
Great size for weekend travel. I love the look. Zippers are strong. Material is also strong. I've received many compliments on the bag. Easy to carry. Love that it has a side handle. I do miss that there are no side pockets, but great bag overall.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 13, 2025
C
Verified Purchase
Charles Echeverria
Houston, US
★★★★★ 5
Perfect bag
Color: Apricot, Size: 16 Inch
Perfect bag! Is lightweight, good size, and beautiful, it has plenty of pockets, and easy to carry on your back or on your carry-on
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 3, 2025
B
Verified Purchase
bernadette pernotto
Boise, US
★★★★★ 4
Doesn't Fit 16" Laptop
Color: C-apricot, Size: 14 Inch
My Dell laptop is 9" wide & 14" long. I can only zip up the back partially with my laptop in the backpack. I don't add anything else that is heavy because I'm fearful it will break. I wish it was bigger. I can fit my Apple laptop in it but it is smaller.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 4, 2025
A
Verified Purchase
Ashley Driggers
Belleville, US
★★★★★ 5
Good Quality
Color: C-apricot, Size: 14 Inch
The quality of the backpack is very good. I like how it has a waterproof feeling fabric. I have used it for work and travel and it is excellent quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2026
T
Verified Purchase
Tara S
Belleville, US
★★★★★ 5
Great Bag
Color: Black Brown, Size: 17.3 Inch
This backpack is awesome it holds way more than I anticipated and is super cute. The quality seems to be good to what I can tell.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 16, 2025

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