⛳️ Choosing between the Ventus, TR, and VeloCore+? Use the Ventus Shaft Guide

💚 💚 💚 Assembled Driver shafts with adapter tip installed - choose your custom build!

🎯 Find Your Perfect Shaft in 2 Minutes — Take the Quiz →

JumboMax JMX JumboFlat XL 17" Putter Grip

$29.99 USD
Shipping calculated at checkout.

Free shipping with $99+ within the US


Color

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*

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*

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

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!

WHAT YOU NEED TO KNOW

The JumboMax JMX JumboFlat XL 17" is a long putter grip for the armlock style. It has a wide, flat surface and a tapered shape made to rest flat against your lead forearm, with a rounded back that fits your fingers. JumboMax lists it at 16.9" long, 1.62" at its widest and 125 g. The outer is JumboMax's tacky Poly-Tour. JumboMax developed it with Bryson DeChambeau.


Who It's For

Good fit if you...

  • Putt with an armlock and want a grip shaped to lie flat on your forearm
  • Want a wide, flat face to help keep your lead wrist flat
  • Like a rounded back section for your fingers
  • Want a tacky, textured outer layer

Not the right fit if you...

  • Want a pistol or round armlock grip: see the JMX ArmLock 21
  • Use a broomstick putter and want set hand spacing: see the Two Piece Split
  • Need a swing grip: the JumboFlat is for putters only

How It Feels

Wide, Flat Face. JumboMax says the JumboFlat has the widest flat surface of any armlock grip. The flat side sits against your lead forearm so it can stay in contact through the whole stroke.

Tapered to Lie Flat. The grip tapers along its length so it rests flat on the forearm, and the rounded back section is shaped to fit your fingers.

Poly-Tour Outer. JumboMax's Poly-Tour outer gives tack and texture for a secure hold.


Specifications

Spec JMX JumboFlat XL 17"
Brand / model JumboMax JMX JumboFlat 17
Type Long putter grip for armlock, flat face, rounded back, tapered
Length 16.9"
Max width 1.62"
Weight 125 g
Outer Poly-Tour
Colours we sell Red/White/Blue, Team USA (Red/White/Blue), White/Black/Silver, Black/Silver

Source: JumboMax official JMX JumboFlat 17 product page and grip specs table, checked October 2026. JumboMax publishes no core size; weights are +/- 2 g.


JumboMax Long Putter Grips

Model Diameter Weight Length
JumboFlat XL 17" (this grip) 1.62" (max width) 125 g 16.9" You are here
ArmLock 21 Pistol 1.25" 151 g 21" View
ArmLock 21 Round 1.18" 145 g 21" View
Two Piece Split 1.15" 127 g 13-1/4" and 5-7/8" View

Diameter, weight and length from JumboMax's grip specs tables. JumboMax calls this grip the JMX JumboFlat 17. The ArmLock 21 is one product with a Pistol or Round shape.


Help Choosing

Compare all armlock and long putter grips, browse all JumboMax putter grips or all putter grips, and read our JumboMax Grip Guide. Fitting a longer putter? See putter shafts.


Frequently Asked Questions

How long and heavy is the JumboFlat XL 17"?

JumboMax's grip specs table lists it at 16.9" long, 1.62" at its widest and 125 g.

What putting style is it for?

Armlock. JumboMax made it for golfers who lock the grip against the lead forearm to keep the lead wrist flat.

Is it tapered?

Yes. JumboMax says the shape tapers so it rests flat against your forearm.

How is it different from the ArmLock 21?

The ArmLock 21 is 21" long with a pistol or round shape. The JumboFlat is shorter, at 16.9", with a wide, flat face.

What core size does it fit?

JumboMax publishes no core size for this grip. Check your putter shaft before you buy, or contact us for help.

Questions & Answers

Have a Question?

Ask a Question
  • Will this grip fit the Biomech armlock putter? Currently that comes fitted with a Winn 17" pistol counter balance/long putter grip with a core size of 0.610

    The JumboFlat 17" has a core size 0.580" so it may be too small for your putter shaft.

  • What length putters are necessary for the grip to fit? I have a 33” and a 34” putter, does this grip have some sort of reinforcement due to it’s length to accommodate either of those putters, or would I need a longer putter?

    As long as the shaft diameter is 0.600" or less (for the top 17" of the shaft), then this grip will fit. But to really experiment with an armlock putting style, you'll want to have a longer shaft, so that the putter club is 40" or longer. When installing, the shaft needs to be fully inserted to the end of the inside of the grip. 

  • Should this grip be installed so that the flat size is against your arm?

    Correct, the flat side will rest against your leading arm/wrist, like this.

  • how much to post to new zealand

    Hi, shipping outside of the US will depend on your total order (qty) - please start your checkout, and enter your full shipping address to see shipping options and costs. Please also read our full shipping policy, and let us know if you have any questions.

  • I need a new putter grip for my Tommy Armour TA-25 Belly 43" putter. The current grip is about 20" long and the core tapers from about 1" at the end of the putter to about 1/2" at the lowest point (20" down from the end). What putter grip would you recommend? Thank you very much!!!

    We do have some belly putter grips that might work here: https://www.grips4less.com/collections/belly-putter-golf-grips

    Would also recommend checking out the Winn 21" pistol putter grip - the width/flat front is about 1" at the top, and tapers to about 3/4" at the bottom. Let us know if you have any questions!

  • what is the circumference of the grip

    For the horizontal (top) part it is 41.80mm and for the vertical part it is 29.60mm - see here.  

JumboMax

JumboMax JMX JumboFlat XL 17" Putter Grip

$29.99 USD

The JumboMax JMX JumboFlat XL 17" is a long putter grip for the armlock style. It has a wide, flat surface and a tapered shape made to rest flat against your lead forearm, with a rounded back that fits your fingers. JumboMax lists it at 16.9" long, 1.62" at its widest and 125 g. The outer is JumboMax's tacky Poly-Tour. JumboMax developed it with Bryson DeChambeau.


Who It's For

Good fit if you...

  • Putt with an armlock and want a grip shaped to lie flat on your forearm
  • Want a wide, flat face to help keep your lead wrist flat
  • Like a rounded back section for your fingers
  • Want a tacky, textured outer layer

Not the right fit if you...

  • Want a pistol or round armlock grip: see the JMX ArmLock 21
  • Use a broomstick putter and want set hand spacing: see the Two Piece Split
  • Need a swing grip: the JumboFlat is for putters only

How It Feels

Wide, Flat Face. JumboMax says the JumboFlat has the widest flat surface of any armlock grip. The flat side sits against your lead forearm so it can stay in contact through the whole stroke.

Tapered to Lie Flat. The grip tapers along its length so it rests flat on the forearm, and the rounded back section is shaped to fit your fingers.

Poly-Tour Outer. JumboMax's Poly-Tour outer gives tack and texture for a secure hold.


Specifications

Spec JMX JumboFlat XL 17"
Brand / model JumboMax JMX JumboFlat 17
Type Long putter grip for armlock, flat face, rounded back, tapered
Length 16.9"
Max width 1.62"
Weight 125 g
Outer Poly-Tour
Colours we sell Red/White/Blue, Team USA (Red/White/Blue), White/Black/Silver, Black/Silver

Source: JumboMax official JMX JumboFlat 17 product page and grip specs table, checked October 2026. JumboMax publishes no core size; weights are +/- 2 g.


JumboMax Long Putter Grips

Model Diameter Weight Length
JumboFlat XL 17" (this grip) 1.62" (max width) 125 g 16.9" You are here
ArmLock 21 Pistol 1.25" 151 g 21" View
ArmLock 21 Round 1.18" 145 g 21" View
Two Piece Split 1.15" 127 g 13-1/4" and 5-7/8" View

Diameter, weight and length from JumboMax's grip specs tables. JumboMax calls this grip the JMX JumboFlat 17. The ArmLock 21 is one product with a Pistol or Round shape.


Help Choosing

Compare all armlock and long putter grips, browse all JumboMax putter grips or all putter grips, and read our JumboMax Grip Guide. Fitting a longer putter? See putter shafts.


Frequently Asked Questions

How long and heavy is the JumboFlat XL 17"?

JumboMax's grip specs table lists it at 16.9" long, 1.62" at its widest and 125 g.

What putting style is it for?

Armlock. JumboMax made it for golfers who lock the grip against the lead forearm to keep the lead wrist flat.

Is it tapered?

Yes. JumboMax says the shape tapers so it rests flat against your forearm.

How is it different from the ArmLock 21?

The ArmLock 21 is 21" long with a pistol or round shape. The JumboFlat is shorter, at 16.9", with a wide, flat face.

What core size does it fit?

JumboMax publishes no core size for this grip. Check your putter shaft before you buy, or contact us for help.

Color

4 colors available

View product
// Simprosys Question and Answer Schema //