UST Recoil Dart ESX Iron Shaft (0.370" Parallel Tip)
This is a Pre-Order item (estimated to ship in 1-2 weeks)
Family Owned Est. 1991
Family Owned Est. 1991
We are a family owned business since 1991 and we're dedicated to helping our customers find the best gear. When you buy from us, you're buying from people who care and love this game as much as you do.
Free Shipping with $99+ US Orders*
Free Shipping with $99+ US Orders*
Orders with US delivery addresses over $99 USD (subtotal) ship for free (excluding shaft orders to Hawaii and Alaska). We also have competitive flat rate shipping options for order under $99, as well as international deliveries. See our full shipping policy/rates
BTW, our team works fast to ship and get your order delivered as quickly as possible. All in-stock order ship the same day when placed by 5pm ET (2pm PT). For items not in stock, or available as pre-order, please allow ~3-5 business days to process before shipping.
60 Day Easy Returns*
60 Day Easy Returns*
Change your mind? No problem. Our hassle-free returns portal lets you request a return and keep track of your refunds.
*Assembled shafts and custom clubs are not eligible for return. See our full return policy here.
Due to strict inventory guidelines, we do not process "exchanges". We ask that you send the items back for a refund and then repurchase whatever you need! >> Access your order history here and start a request here.
RETURN COSTS & RESTOCKING FEE (NON-ASSEMBLED ITEMS)
There are no restocking fees. However the cost of the return shipping label will be deducted from your refund ($7.5 for small/lite packages, $13 for standard size packages, $15 for non-standard size packages such as golf shafts), if you decide to use the label provided by us. If you purchase a label yourself from a local carrier office (ie. USPS, UPS, Fedex), then there will be no deductions from your refund. If the returned items are not in new and unused condition, we reserve the right to dispose of them or return them to you at your expense. You may purchase return shipping if you would like the items sent back.
RETURN COSTS & RESTOCKING FEE (ASSEMBLED ITEMS)
🚫 No Returns or Refunds on Assembled Shafts
Please note that all assembled shaft orders are final. Due to the custom nature of this process, we do not accept returns or offer refunds on any assembled shafts. Each order is built to your specifications, and once assembly begins, we are unable to restock or resell the components.
We encourage you to double-check all specs (flex, length, grip, adapter, etc.) before placing your order. If you need help confirming details, our team is happy to assist before you check out.
Returns can be made on non-personalized items and non-assembled items within the US, 60 days after you've received the original order. Items are only accepted on unopened and unused products. Items must be returned in the original packaging.
INTERNATIONAL RETURNS
We do not accept any international returns at this time.
At Grips4less, we strive to provide a smooth international shopping experience. To ensure clarity regarding shipping, duties, and returns, please review our policy below:
Duties, Taxes, and Import Fees
- International orders may be subject to duties, taxes, and import fees imposed by your country. These charges are the customer's responsibility and are determined by local customs authorities.
- If duties and taxes are not paid upon delivery, the carrier may be unable to complete the shipment and may return the package to us.
Refused or Unpaid Shipments
- If an international order is refused or the required duties/taxes remain unpaid, the carrier may return the package to us.
- In such cases, customers will be responsible for all shipping costs, including outbound and return shipping fees.
- Refunds for returned shipments will be issued minus all incurred shipping fees.
Lost or Delayed Shipments
- Once an international order has shipped, we are not responsible for delays caused by customs processing or other carrier-related issues.
- If a package is significantly delayed, we encourage customers to contact their local customs office or the carrier for more information.
By placing an international order (any order shipped outside the US), you acknowledge and agree to the terms outlined in this policy.
REFUNDS
Refunds are normally processed back to the original account (ie. credit card or PayPal). If you prefer store credit, please include this note of the refund request.
HOW TO CREATE A RETURN (ITEMS RETURNED MUST BE IN NEW & UNUSED CONDITION)
1) Access your order history, and request a return here
2) Your return request will be responded to within 1 business day (not including Sat/Sun/holidays). If the request is approved, we will e-mail you a return label.
3) Package up the original order and drop off the package at your local carrier.
4) After 1-2 weeks after receiving the return order, we will process and issue your refund (original paid price of items returned minus cost of return shipping) to the original payment account.
DID WE MAKE A MISTAKE?
If there was an issue with your order (the wrong was delivered, or the product arrived damage due to carrier neglect), we will ask you to send us some pictures. If the item is confirmed to be incorrect, we will provide a return label to send back the items. Once the items are back in our warehouse, we will resend your order with the correct items. We cannot ship out a replacement order until the original items are received back. For damanged items, we will open a claim with the carrier, and once the claim is approved, we will send the replacement item.
CANCELATION REQUESTS
While we do our best to process cancelation requests, our shipping team works fast, and we cannot guarantee that your order will be canceled
If we are able to cancel the order for you, there will be a 5% restocking fee deducted from the refund.
RISK OF LOSS
All purchases of physical items from Grips4less are made pursuant to a shipment contract. This means that the risk of loss and title for such items pass to you upon our delivery to the carrier.
RETURNS, REFUNDS AND TITLE
Grips4less does not take title to returned items until the item arrives at our fulfillment center.
CONNECT WITH A REAL PERSON
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100% Authenticity Guaranteed
100% Authenticity Guaranteed
Grips4less only sells 100% authentic products. We purchase direct from top manufacturers and ship all orders from our warehouse. We've been working with all the top brands in golf for over 3 decades, which means if there are any issues you encounter with your purchase, we are here to resolve them as quickly as possible (so you can get you back on the course!). Your satisfaction is our #1 priority!
UST Recoil Dart ESX Iron Shaft (0.370" Parallel Tip)
WHAT YOU NEED TO KNOW
The UST Recoil Dart ESX is a lightweight graphite iron shaft that adds UST's ESX design to its DART technology for a steadier tip and a high launch. This listing is the 0.370" parallel-tip version in the 50 series (F1) and 60 series (F2, F3, F4), from 54 to 67 g. Each shaft comes in one length that you trim to fit.
Before you order: this is a parallel-tip shaft in one length that gets trimmed for each iron, so order one per club. Not sure about trimming? Contact us first.
Who It's For
Good fit if you...
- Want help getting the ball up: UST rates every ESX build high launch
- Want a light iron shaft, 54 to 67 g, for more club speed
- Play L, A, R or S flex (UST's F1 to F4)
- Have irons with a 0.370" parallel-tip hosel, or want shafts you can trim yourself
Not the right fit if you...
- Have irons with a 0.355" taper-tip hosel: look at the Recoil Dart 65 0.355", made for each iron
- Want a heavier, players graphite shaft with lower torque: the UST Dart V runs 87 to 122 g
- Need a stiffer flex than S: take the Iron Shaft Finder Quiz to find a better match
How It Plays
ESX for a steadier tip. UST says its ESX design increases tip stability for more consistent, accurate shots, and also raises launch and ball flight.
DART inside. UST tunes hoop stiffness where it matters: more in the energy transfer section for distance, and more in the tip to keep feel while steadying it. Dual Action Recoil Technology removes inconsistent areas, which UST says avoids the dead feel some graphite iron shafts have.
Light weights. The 50 series F1 weighs 54 g. The 60 series runs 60 g (F2), 64 g (F3) and 67 g (F4), with torque from 4.2° to 4.6°.
Specifications
UST's figures for every flex we sell.
| Series | Flex | Weight (g) | Torque (°) | Launch |
|---|---|---|---|---|
| Recoil Dart ESX 50 | F1 (L) | 54 | 4.2 | High |
| Recoil Dart ESX 60 | F2 (A) | 60 | 4.6 | High |
| Recoil Dart ESX 60 | F3 (R) | 64 | 4.5 | High |
| Recoil Dart ESX 60 | F4 (S) | 67 | 4.5 | High |
Material: graphite | Tip: 0.370" parallel, 5.5" parallel tip section | Butt diameter: 0.587" (F1), 0.593" (F2), 0.602" (F3, F4) | Raw length: 40" (50 series), 41" (60 series) | UST publishes no spin rating or bend point | Source: UST Mamiya official Recoil DART ESX specs, checked October 2026
Will It Fit Your Irons?
This shaft is for irons with a 0.370" parallel-tip hosel. It comes in one length (40" for the 50 series, 41" for the 60 series), and each shaft gets tip and butt trimmed for the iron it goes in, so order one per club. If your irons take a 0.355" taper tip, get the Recoil Dart 65 0.355" instead.
Not sure which tip your irons take, or how to trim each shaft? Take the Iron Shaft Finder Quiz, contact us, or let us install them with our Retrofit Service.
How It Compares to Other UST Iron Shafts
| Recoil Dart ESX (this page) | Recoil Dart 65 | Dart V | |
|---|---|---|---|
| Tip | 0.370" parallel | 0.355" taper | 0.355" taper |
| How it's sold | One length you trim to fit | One shaft per iron, 3-iron to wedge | One shaft per iron, 2-iron to wedge |
| Flexes we sell | F1 to F4 | F2, F3 | F3 to F5 |
| Weight (UST) | 54–67 g | 65–66 g | 87–122 g |
| Launch (UST) | High | Mid-high | Mid, Mid-low (120) |
| Torque (UST) | 4.2–4.6° | 3.1° | 1.5–2.9° |
| Core technology | ESX design + Dual Action Recoil Technology | Dual Action Recoil Technology | Dual Action Recoil Technology |
Compare every UST family in the UST Mamiya Shaft Guide, browse all graphite iron shafts, or start with our Iron Shaft Buyer's Guide for material, weight and flex basics.
