Skip to content

*ONEAL SIERRA II Flat Adult Adventure Helmet

Marsoni M251S
Sale price$199.00
Pay 4 payments of $49.75 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
*ONEAL SIERRA II Flat Adult Adventure HelmetSIZING CHART Whether you ride on the pavement or the dirt or both the Sierra II has the features you need for your next two wheel adventure. Combining a full windscreen and a visor with a drop down tinted shield, the Sierra II helmet will get you anywhere you want to go. FEATURES: Shell is constructed with ABS Weight: 1590g (50g) Moisture wicking, removable washable air channeled comfort liner Vent holes for optimal ventilation Integrated face shield
Easy Shipping

Quick Dispatch:

Your *ONEAL SIERRA II Flat Adult Adventure Helmet orders ship within 1-2 business days.

Delivery Options:

  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your *ONEAL SIERRA II Flat Adult Adventure Helmet ships.

Need Help?
Questions about *ONEAL SIERRA II Flat Adult Adventure Helmet, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for *ONEAL SIERRA II Flat Adult Adventure Helmet in your area.

Get Shipping Estimates

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
4.1 ★★★★★
Based on 2077 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
J
Verified Purchase
Jennifer Martin
Houston, US
★★★★★ 5
Great value and quality parts
Size: 23 Pcs for eufy C20 Omni
The parts are great and working perfectly! Very happy with this purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 17, 2025
T
Verified Purchase
Tennille Garcia
West Palm Beach, US
★★★★★ 5
Excellent Product
Size: 23 Pcs for eufy C20 Omni
Awesome replacement kit at a good price without sparing quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 28, 2026
D
Verified Purchase
Deb
Louisville, US
★★★★★ 4
Nice accessories for robot
Size: 19 Pcs for eufy L60/ L50 Series
Nice product and value
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2025
S
Verified Purchase
SympathyIVTheDevil
Los Angeles, US
★★★★★ 5
Perfect Replacement Set to Keep Your C20 Omni Running Smoothly
Size: 23 Pcs for eufy C20 Omni
This BUXEBUX 23‑piece accessory kit fits the Eufy C20 Omni perfectly and has everything needed to refresh the vacuum without hunting for individual parts. The brushes, filters, and rollers all feel well‑made, install easily, and noticeably improve cleaning performance. Great value for keeping the robot vacuum in top shape.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
S
Verified Purchase
SickboySD
Charlottesville, US
★★★★★ 5
Replacement parts
Size: 19 Pcs for eufy L60/ L50 Series
Good replacement parts pack. This will last you a while.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026

recommand products