SKU: 51906885683

2021-2023 Gas Gas EC 300 Cylinder Piston Top End Kit 55630038100 55730138000

$159.70 $177.44
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Description

2021-2023 Gas Gas EC 300 Cylinder Piston Top End Kit 55630038100 5573013800072mm Cylinder Piston Gasket Top End Rebuild Kit For EXC XC XC W 300 TPI 2019 2022 Features: If your cylinder blows through, or a piston seizure has occurred, then this kit is exactly the right thing for you. Kit includes cylinder, piston, rings, pin, clips & top end gasket kit (you get exactly what is pictured). Piston is anodized for superior heat resistance and longer lifespan. The gaskets use performance materials to increase durability and provide

72mm Cylinder Piston Gasket Top End Rebuild Kit For EXC / XC / XC-W 300 TPI 2019-2022

Features:
If your cylinder blows through, or a piston seizure has occurred, then this kit is exactly the right thing for you.
Kit includes cylinder, piston, rings, pin, clips & top end gasket kit (you get exactly what is pictured).
Piston is anodized for superior heat resistance and longer lifespan.
The gaskets use performance materials to increase durability and provide greater reliability.
Includes all gaskets pictured to rebuild top end.
Kit is for standard bore size - 72.0 mm, 18mm steel piston pin.
This kit is excellent as a low-cost replacement for defects in the original cylinder.

Specifications:
Condition: Aftermarket 100% Brand New
Quantity: 1 Set
Material: Aluminum
Displacement: 300cc
Engine: 2-Stroke
Bore Type: Standard Bore
Bore diameter: STD 72mm
Pin diameter: 18mm
Pin Overall Length: 56mm

Replacement Part Number:
Cylinder and Piston: 55630038100, 55730138000
Piston Kit: 55630307100
Cylinder Base Gasket: 55430030040
Left Control Cover Gasket: 55537006000
Right Control Cover Gasket: 55537008000
Pin, Piston: 55430033000
Piston Ring Set (Std): 54830132000
Circlips, piston (2): 54830074000
Intake Manifold Gasket: 54830062200
Exhaust Gasket: 0770440030

(Always compare part numbers to your parts schematics and cross reference appropriately.)
(This is NOT a genuine Part, OEM part numbers are included for product type identification and comparison only.)

Fits Make/Model/Year:
Only fits fuel injected TPI two-stroke engines.
Fit for 300 XC TPI 2019-2022
Fit for 300 EXC Six Days TPI 2019-2022
Fit for 300 EXC TPI 2019-2022
Fit for 300 XC-W TPI 2019-2022
Fit for 300 XC-W Six Days TPI 2019-2022
Fit for Gas Gas EC 300 2021-2023
Fit for Gas Gas EX 300 2021-2023
Fit for Husqvarna TE 300 TPI 2019-2023
Fit for Husqvarna TX 300 TPI 2019-2022

(Compatibility Chart is for Reference ONLY!!!)
(Please Compare with Your faulty unit and the image we provided to Decide Fitment)

Package Includes:
1x Cylinder
1x Piston
1x Piston Ring Set
1x 18mm Wristpin
1x Circlip(2)
1x Cylinder Base Gasket
1x Intake Manifold Gasket
1x Left Control Cover Gasket
1x Right Control Cover Gasket
1x Intake Manifold Gasket
2x Exhaust Gasket:
O-Ring Kit

(Comes exactly as pictured.)

Note:
Carefully compare to your old parts to be sure this is the correct part for your machine.

The product on offer is an accessory or spare part and thus is not an original product of the vehicle manufacturer.
The name of the vehicle manufacturer is stated only as an indication of the determination of the product being offered as an accessory or spare part, to clarify, for which vehicle the product on offer Fits.

Warranty:
Returns: Customers have the right to apply for a return within 60 days after the receipt of the product
24-Hour Expert Online: Solve your installation and product problems

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
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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: 51906885683

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4.2 ★★★★★
Based on 13 reviews
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Product Reviews
G
Verified Purchase
George Mann
Bozeman, US
★★★★★ 5
Enjoyable
Color: Grey, Size: Queen
Holds their shape and stay cool.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
R
Verified Purchase
River
Los Angeles, US
★★★★★ 5
So comfy
Size: King (Pack of 1), Style: Standard Loft (4" - 5")
I spent time looking up/watching videos on pillows for neck pain and this one comes up a lot. I’m someone that used to wake up every few weeks with a stiff neck so bad it could make me cry at work. I haven’t had that happen once after months of using this pillow. I look forward to laying my head down on it every night. It’s a luxury experience every time. I think what it does so well is maintain its shape. You can really squish it up how you want and it stays there even after hours. Moldable but somehow still firm. It’s expensive but to me the value is there because I no longer get crazy neck pain from sleep. Worth trying it out for sure. Btw I was stuck between this is and Purple brands couple top end options. I never got around to trying them because I tried this one first and was very satisfied! Feb 2026. Still use it every night and it's still protecting me from neck pain I used to get from sleeping. It's held up amazing. Hope to use it for many more years.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2025
A
Verified Purchase
Amazon Customer
Los Angeles, US
★★★★★ 5
Saatva Pillow is great
Size: Standard/Queen (Pack of 1), Style: Standard Loft (4" - 5")
So far this is the best pillow I have had in the last 10 years and I have tried two Purple pillows a couple different memory foam and Gel pillows at least 4 more pillows that I can't even remember the names of. My neck and shoulders are almost pain free. I have also been doing more stretching of my arms which is also helping, but this pillow has really made the most difference in the pain I have had, I felt difference from the first time I put my head on it. It's comfortable, the perfect height I got the 4"-5", I also got the queen size and it's great. It supports my head just right. I also ordered the Saatva Classic 14" mattress from the company and I sure hope it's as good or better would be great because I have back issues for the last 50 years.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 16, 2025
Y
Verified Purchase
YL
Whiting, US
★★★★★ 1
Cotton Fluff Around a Mostly Empty Bag
Size: King (Pack of 1), Style: High Loft (6"-7")
Bought the high-loft king, thinking it would be a great (tall) side-sleeper. What I got? A very nice, completely compressible cotton outer shell wrapped around a bag a bit smaller than a standard pillow. In that bag? A tiny amount of small latex chunks, just about a third full. That’s right, some cotton fluff around a basically empty bag. Could you buy some latex yourself and add it? No, the bag is sewn shut. You could probably fill a small pillow with latex you bought elsewhere and put that in. But seriously, what did you pay Saatva for in that case? Probably as close as I’ve seen a major/high-reputation company get towards a literal example of rip off.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
P
Verified Purchase
Perry Baker
New York, US
★★★★★ 3
Wrong item ships/decent pillow/price unjustified
Size: Standard/Queen (Pack of 1), Style: Standard Loft (4" - 5")
Sent me the wrong pillow twice in a row. It said high loft and standard loft on the packing, not sure what the problem is. I ordered standard loft both times, and both times they sent high loft. That name is very deceiving though. If what I have is high loft, the standard loft wouldn’t be much thicker than your standard flat down pillow. If you’d like any sort of neck support I’d suggest starting with the high loft and going down instead of the other way around. I am 5’ 7” 130lbs and this pillow does not lift my neck up further than neutral, which is a good thing. Shredded memory foam pillows are significantly higher or thicker if that helps. Pillow itself grew on me. You can definitely feel that there is a different material in the center of the pillow. I ordered it as a gift and ended up keeping both pillows. The price tag on this item is absolutely outrageous. I would have never ordered it for myself. Saatva products don’t last in my experience, we got their firmest mattress and within 2 years it was sagging horribly. I am interested to see how long this pillow lasts!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 19, 2026

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