2021-2023 Gas Gas EX 300 Cylinder Piston Top End Kit 55630038100 55730138000
SKU: 45478513121

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

Sale price$159.70 Regular price$177.44
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

2021-2023 Gas Gas EX 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: 45478513121

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 2020 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
L
Verified Purchase
Lorraine Nathanson
San Leandro, US
★★★★★ 5
Colorful, Sturdy & Great Value
Color: Large Set of 4
Purchased for our two puppies when they were 2 months old and weighed about 14 pounds so theses balls were a little big for them to hold in their mouths but that didn't stop them from trying. While they did like these balls they much preferred softer soccer balls, the later of which did not hold up well at all. I had hoped they would play with these balls more when they were older but that hasn't happened 5 months later. I guess it's no fun if you can't tear the toy apart. Colors are very bright and they do enjoy chasing after them as long as I am the one rolling them across the room for them. Maybe when they progress to batting things with their paws they will start to do this for themselves.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2025
E
Verified Purchase
Erik
San Leandro, US
★★★★★ 5
My pup loves them
Color: Large Set of 4
Colors are bright and my dog loves the squeaky! Good size no worries of choking.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 10, 2025
M
Verified Purchase
Mary Freeman
Boise, US
★★★★★ 5
amazing
Color: Large Set of 4
good buy worked well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
S
Verified Purchase
Steve
Grantham, US
★★★★★ 4
3.5, Not 3.0
Color: Medium Set of 6
These balls were almost exactly what I needed. I was replacing my boy’s favorite ball, which is the 3” squeaky, spikey ball that fits in the chuck it launcher. Unfortunately I saw the shiny object next to it and because there were SIX balls and a dollar less, I failed to see that these are 3.5” balls instead of 3”…. Great balls but no fitty in the slingy. Buyer beware. No chuck it no problem. Save a buck.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 9, 2026
H
Verified Purchase
HollisHoHo
Battle Creek, US
★★★★★ 5
MY CHIHUAHUA LOVES THESE BALLS!!
Color: Samll Set of 8
My little chihuahua, BamBam, is addicted to balls, especially little balls that squeak! However, any balls that have material on them, BamBam will tear them apart, swallow the material and then get an upset tummy! These balls saved the day! BamBam LOVES them & she cannot tear them apart! They hold up so well! No matter how much BamBam plays with them, they keep squeaking away!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 15, 2025

recommand products