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RD118-21700 RD148-21700 Bottom Roller Compatible with Kubota KX121-3 Mini Excavator, 121-3 SS ST Rubber Track

4.5 (2) Write Review
Free shipping on orders over $29.99

$71.99

$ 29 .99 $29.99

In Stock
  • Compatible with: This bottom roller is compatible with Kubota KX121-3 Mini Excavator, Kubota KX 121-3, Kubota KX 121-3 SS, Kubota KX 121-3 ST
  • Replace Part Number: RD118-21700, RD148-2170 bottom track roller
  • Easy to Install: The bottom rollers are easy to replace. New rollers can be installed without removing the rubber tracks from the machine. Each bottom roller is connected to the track frame with only two bolts. Do not over-tighten
  • High-quality Material: Our bottom roller is made of high-quality material, roller is not easily deformed and not easy to be damaged, and can be used for a long time
  • Kindly Note: Please kindly check whether this RD118-21700 bottom roller is suitable for your model before purchasing. If you have any questions, please let us know, and we will give you a satisfying solution


Product Description

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2

BOTTOM ROLLER SPECIFICATIONS:

  • Color: Black
  • Material: 50 MnB Steel
  • Surface Hardness: HRC52-58
  • Operating Temperature Range: -20℃ to 110℃.

3

High-quality Material

Our bottom roller is made of high-quality material, which is not easily deformed and not easy to be damaged, and can be used for a long time.

3

Easy to Install

The rollers are easy to replace. New rollers can be installed without removing the rubber tracks from the machine. Each roller is connected to the track frame with only two bolts. Do not over-tighten.

5

Kindly Note

Please kindly check whether this RD118-21700 bottom roller is suitable for your model before purchasing. If you have any questions, please let us know, and we will give you a satisfying solution.


Bart Saroyan
August 16, 2025
This bottom roller is great. High-quality materials ensure optimal performance and longevity in demanding construction environments‌. It has been working fine for 4 months now. If there are any issues I will update my review.
Corey Wheeler
December 4, 2024
Received the product, the product quality is very good, providing reliable durability and long-lasting performance. Installed quickly following the YouTube video! I used it for a while and had no problems. I used it for 3 months before leaving a review: Overall, I am very satisfied.