Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Air and Fuel› Nitrous Oxide Systems and Components
Nitrous Express
Nitrous Express - 4AN BOTTLE NIPPLE FOR SECOND GENERATION LIGHTNING 45 VALVE - 11721
SKU: N004 11721
Beginner — under 30 min
Overview
Show original supplier description
Part #: 11721
This 4AN nipple fits NEW NX Lightning 45 bottle valves.
Nitrous Oxide Bottle Valve Nipple - Straight - New Style Lightning 45 Bottle Valve to 4 AN Male - Aluminum - Black Anodized - Each
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Vehicle Symptoms
- Nitrous feed line leaking at bottle valve connection
- Bottle valve nipple stripped or damaged
- Cannot secure nitrous line to Lightning 45 valve
- Nitrous system pressure loss from valve fitting
Relevant Conversations
- Nitrous Express bottle nipple replacement 11721
- 4 AN male straight bottle valve nipple leaking
- How to replace nitrous bottle valve nipple
- Nitrous Express Lightning 45 valve nipple
- 4AN bottle nipple for nitrous system install
- Nitrous bottle valve nipple stripped fix
- Nitrous Express 11721 vs 11720
- NEX bottle nipple torque specs
- Nitrous feed line fitting leaking at valve
- Upgrade nitrous bottle valve nipple to 4AN
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Nitrous Express |
| Part Number | N004 11721 |
About MOTORMIA
Buy with Confidence
Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return PolicyShipping
Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
View Full Shipping Policy