JumboMax JMX ArmLock 21" Putter Grip
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
If you have any questions or need assistance visit our help center
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!
JumboMax JMX ArmLock 21" Putter Grip
WHAT YOU NEED TO KNOW
The JumboMax JMX ArmLock 21 is a 21" putter grip built for armlock putting. It's slightly oversize with a gradual taper, and it comes in two shapes: the Pistol (1.25", 151 g) with an oval bottom that fits your fingers, or the Round (1.18", 145 g) that lets you put your hands wherever they feel natural. We stock the Pistol in Red/White/Blue, White/Black/Silver and White/Blue/Silver, and the Round in Red/White/Blue and White/Black/Silver.
Fitting it to your putter: a 21" grip needs a longer putter so it can reach your lead forearm. It's also a natural fit on counterbalanced putters. Compare every long putter grip we carry, or see our putter shafts if you're building a new one.
Who It's For
Good fit if you...
- Putt with an armlock and want a full 21" grip
- Use a long or counterbalanced putter
- Want to take wrist break out of your stroke
- Like choosing between a pistol and a round shape
Not the right fit if you...
- Want a wide, flat face against your arm. That's the JumboFlat XL 17".
- Putt with a broomstick and want your hands split apart. Grab the Two Piece Split.
- Want a 17" grip instead. Look at the SuperStroke Zenergy 1.0P 17".
- Use a standard-length putter. Try the JMX Pistol or ST/1.2.
How It Plays
Long enough to lock in. At 21" there's plenty of grip to rest against your lead forearm with your hands still in a normal spot. Once it's locked, your lead wrist stays flat and the stroke comes from your shoulders.
Pistol or round, your call. The Pistol has a flatter top and an oval bottom that settles into your fingers, the way most putter grips feel. The Round has no flat side at all, so you can set your hands like you would on a swing grip.
Slightly oversize, gradual taper. It's a touch bigger than a standard putter grip and tapers slowly along its length, so it works with more than one grip style without feeling bulky.
Check your shaft before you install. The ArmLock 21 has a .580" round core. Most putter shafts match that, but if yours is thinner at the top (some are .560"), build it up with a couple of wraps of tape so the grip doesn't spin. At 145 to 151 g it's also a heavy grip, so expect the head to feel lighter than it did with your old one; on a counterbalanced putter that's the whole idea.
Specifications
| Spec | ArmLock 21 Pistol | ArmLock 21 Round |
|---|---|---|
| Length | 21" | 21" |
| Size | 1.25" | 1.18" |
| Weight | 151 g (±2 g) | 145 g (±2 g) |
| Shape | Pistol, oval bottom | Round |
| Core | .580" round | .580" round |
| Colors and part numbers | Red/White/Blue JMX340-1000, White/Black/Silver JMX340-3000, White/Blue/Silver JMX340-7000 | Red/White/Blue JMX350-1000, White/Black/Silver JMX350-3000 |
Specs from JumboMax, checked October 2026. Core size from our own fitting records.
JumboMax Long Putter Grips
| Grip | Length | Size | Weight | Shape |
|---|---|---|---|---|
| JumboFlat XL 17" | 16.9" | 1.62" max width | 125 g | Wide, flat face |
| ArmLock 21 Pistol (this one) | 21" | 1.25" | 151 g | Pistol, oval bottom |
| ArmLock 21 Round (this one) | 21" | 1.18" | 145 g | Round |
| Two Piece Split | 13-1/4" + 5-7/8" | 1.15" | 127 g | Round, two pieces |
Lengths, sizes and weights from JumboMax, checked October 2026.
Finishing the Putter?
Need supplies? The installation kit has tape strips and solvent, and our regripping guide walks you through it. Building an armlock putter? Browse putter shafts. Still deciding on a shape? Our putter grip shapes guide breaks down pistol, round and flat styles, or browse every JumboMax putter grip.
