More Power in Every Purchase - Join the Summit Rewards Program Today!

Make/Model Search
Make/Engine Search

Brands
Savings Central
Contact Us
Help Center
1-800-230-3030

Call Us
My Garage
Wish List
Order Status & Returns

Welcome
My Account

Order Status

Wish List
Savings Central
Shop by Brand
Shop Your Passion
- Shop Your Passion
- Truck / SUV
  
  Jeep®
  
  Restoration
  
  Stock Replacement
  
  Late Model Muscle
  
  Tools
  
  Gifts, Clothing, & More
  
  Circle Track
  
  Street Rod
  
  Powersports
  
  Paint & Body
  
  Marine
  
  Jr Dragster
Gift Cards
My Garage
See Our Catalogs
News & Events
Career Opportunities
Contact Us
Help Center
1-800-230-3030 1-800-230-3030
New Products
Shop by Make/Model
Sign In

Search Make/Model

Search Make/Engine

Sign In

Welcome
Account Dashboard
Profile
Order Status & Returns
Buy It Again
Wish List
Rewards Program
Gift Cards & Summit Bucks
Address Book
My Garage Settings
Email Preferences
Text Notifications
My Reviews
My Questions
Catalogs
Tax Exemption
Sign In

More Power in Every Purchase - Join the Summit Rewards Program Today!

Save Now on Select Tools & Shop Equipment!

Filters

In Stock
- In Stock Items, Including at a Supplier. Ships In a Few Days. (7) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- All Items, Including Not In Stock (12) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Department
- Air & Fuel Delivery
- Fasteners & Hardware
Part Type
- Bolts and Screws (4) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Air Filter Elements (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Air Filter Dust Covers (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Brand
- Gardner-Westcott Company (4) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Twin Air (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Make/Model
Price Range
- Less than $10 (4)
- $20-$50 (3)
Filter Options
- PowerSports (3)

Selected Filters

Filter Results by Vehicle

Loading...

Home
Product Results

Your search has been changed to "151121x"

Availability

- In Stock Items, Including at a Supplier. Ships In a Few Days. (7) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- All Items, Including Not In Stock (12) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Filters
Department
- Air & Fuel Delivery
- Fasteners & Hardware
Part Type
- Bolts and Screws (4) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Air Filter Elements (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Air Filter Dust Covers (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Brand
- Gardner-Westcott Company (4) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Twin Air (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Make/Model
Price Range
- Less than $10 (4)
- $20-$50 (3)
Filter Options
- PowerSports (3)

7 Results Found For "151121x"

Showing In Stock Items. Show All 12 Items.

Individual Parts

Part Groups

Results 1 - 7 of 7

Twin Air Dual-Stage Air Filters for 2019-2020 KX250, 2017-2018 KX250F, 2016-2018 KX450F - 151121X

Twin Air Dual-Stage Air Filters for 2019-2020 KX250, 2017-2018 KX250F, 2016-2018 KX450F - 151121X

Twin Air Dual-Stage Air Filters for 2019-2020 KX250, 2017-2018 KX250F, 2016-2018 KX450F - 151121X

TWIN AIRPRE-OILED AIR FILTER - KXF250/450 151121X

Part Number: TWA-151121X

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 27, 2026 if ordered today

Twin Air Air Filter Dust Covers for 2019-2020 KX250, 2017-2018 KX250F, 2016-2018 KX450F - 151121DC

Twin Air Air Filter Dust Covers for 2019-2020 KX250, 2017-2018 KX250F, 2016-2018 KX450F - 151121DC

Twin Air Air Filter Dust Covers for 2019-2020 KX250, 2017-2018 KX250F, 2016-2018 KX450F - 151121DC

TWIN AIR DUST COVER

Part Number: TWA-151121DC

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 27, 2026 if ordered today

Gardner-Westcott Bolts and Screws 15-11214

Gardner-Westcott Bolts and Screws 15-11214

Gardner-Westcott Bolts and Screws 15-11214

1/4-20 X 1 GT HEX CHROME

Part Number: GAR-15-11214

Not Yet Reviewed

Estimated Ship Date: Apr 28, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 28, 2026 if ordered today

Gardner-Westcott Bolts and Screws 15-11210

Gardner-Westcott Bolts and Screws 15-11210

Gardner-Westcott Bolts and Screws 15-11210

1/4-20X3/4 GT HEX CAP CH

Part Number: GAR-15-11210

Not Yet Reviewed

Estimated Ship Date: Apr 28, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 28, 2026 if ordered today

Gardner-Westcott Bolts and Screws 15-11211

Gardner-Westcott Bolts and Screws 15-11211

Gardner-Westcott Bolts and Screws 15-11211

1/4-28 3/4 BOWTIE HEX CHROME

Part Number: GAR-15-11211

Not Yet Reviewed

Estimated Ship Date: Apr 28, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 28, 2026 if ordered today

Gardner-Westcott Bolts and Screws 15-11218

Gardner-Westcott Bolts and Screws 15-11218

Gardner-Westcott Bolts and Screws 15-11218

1/4-20 X 1 1/4 GT HEX CHROME

Part Number: GAR-15-11218

Not Yet Reviewed

Estimated Ship Date: Apr 28, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 28, 2026 if ordered today

Twin Air Dual-Stage Air Filters for 2019-2020 KX250, 2017-2018 KX250F, 2016-2018 KX450F - 151121

Twin Air Dual-Stage Air Filters for 2019-2020 KX250, 2017-2018 KX250F, 2016-2018 KX450F - 151121

Twin Air Dual-Stage Air Filters for 2019-2020 KX250, 2017-2018 KX250F, 2016-2018 KX450F - 151121

TWIN AIR STANDARD DRY AIR FILTER

Part Number: TWA-151121

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 27, 2026 if ordered today

1

Page 1 of 1

Modal Header

Contact us with questions.

Call To Order

This is a custom order part. You can order this part by Contacting Us.

Summit Racing Speedcard. Synchrony Car Care.

Summit Racing Equipment SpeedCard

Jumpstart Your Next Project!

View Details|See if you Prequalify

Stay Updated with Emails from Summit Racing

Never miss a sale on new parts, tools, and more!

= Required

First Name

Last Name

Email Address Email required

See Our Catalogs

News & Events

News & Events Home
OnAllCylinders (blog)
Calendar of Events
New Product Releases
Summit Racing News
News You Can Use
Featured Vehicles
Media Center
Sanctioning Bodies

Help

Help Center
Return Policy
Beat-A-Price Guarantee
Payment Options
Contact Us

Social

Facebook
X/Twitter
Instagram
Pinterest
YouTube
Podcast

About Summit

Corporate History
Retail Locations

My Account

Profile
Email Preferences
Order Status & Returns
Wish List
Address Book
My Reviews
My Questions
My Garage
Sign In

Career Opportunities

More

Summit Racing Credit Card
Gift Cards
Calculators & Tools
Promo Exclusions
Become an Affiliate
Summit Racing Rewards Program
Summit Racing Equipment Protection Plan

Terms of Use | Privacy and Security | Site Accessibility
Copyright 2026 by AUTOSALES, INCORPORATED
dba Summit Racing Equipment | Trademarks

Let's Build it Together^™

Modal Header