JumboMax STR8 Tech Non-Tapered X-Large (+3/8") 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 STR8 Tech Non-Tapered X-Large (+3/8") Grip
WHAT YOU NEED TO KNOW
The JumboMax STR8 Tech Tour Series X-Large is a non-tapered grip in the firm Tour Series style, 3/8" over standard. It stays fat all the way down to your lower hand, which quiets the hands through impact, and at 117 g it adds counterweight under your hands too. It's sized for men's XX-Large or XXX-Large gloves, fits a standard .600" butt, and it's black with white and green accents.
Not sure of your size? JumboMax makes this grip in X-Small, Medium and X-Large only, and sizes it by glove. Between two? Check the ladder below. Our JumboMax grip guide covers the whole lineup.
Who It's For
Good fit if you...
- Wear a men's XX-Large or XXX-Large glove
- Fight a hook or a closed clubface at impact
- Like a firm feel with a seam down the back to set your hands
- Get quick from the top and like some counterweight in the handle
Not the right fit if you...
- Wear a men's XL glove. Go with the STR8 Tech Tour Medium.
- Want the non-tapered shape without the weight. Try the UltraLite STR8 X-Large at 58 g.
- Want a softer, wrapped feel. Try the STR8 Tech Wrap X-Large.
- Don't fight a hook and want the regular tapered shape. Go with the Tour Series X-Large.
How It Plays
No taper means a quieter lower hand. Most grips shrink toward the bottom. This one barely does: 1.16" at the middle and 1.29" at the butt. A fatter lower-hand section makes it harder for your trail hand to roll the face closed, which is why hook players like it.
Firm, with a seam to find. It's the Tour Series style: firm, with a reminder seam down the back so your hands land in the same spot every time. At 117 g it also works as a counterweight to smooth out a quick tempo.
Same stable core. Like every JumboMax, it's built on a twist-resistant core, so the grip doesn't turn in your hands on a heavy lie.
Plan for the weight change. Our rule of thumb at the bench: 5 g of grip weight is about 1 swingweight point. Most standard rubber grips run around 50 g, so going to the 117 g STR8 Tech Tour X-Large takes roughly 13 points off. A driver that read D2 will land somewhere around B9. That lighter head feel is part of the point of this grip, so most golfers leave it alone. One more thing: this grip is already 3/8" over standard, so install it on a single layer of double-sided tape. No build-up wraps.
Specifications
| Spec | STR8 Tech Tour X-Large |
|---|---|
| Size | X-Large (+3/8" over standard) |
| Core | .600" (fits standard .600" butt shafts) |
| Weight | 117 g (±2 g) |
| Diameter | 1.16" mid, 1.29" butt |
| Shape | Non-tapered |
| Feel | Firm |
| Surface | Tour Series style with a reminder seam down the back |
| Color and part number | Black with white and green accents, JM550-6600 |
| Recommended glove size | Men's XX-Large or XXX-Large |
Specs from JumboMax, checked October 2026.
Pick Your STR8 Tech Tour Size
| Size | Weight | Mid / butt | Glove size | |
|---|---|---|---|---|
| X-Small (+3/16") | 83 g | 0.97" / 1.15" | S, M-Cadet or M | View |
| Medium (+5/16") | 102 g | 1.04" / 1.22" | M/L, L or XL | View |
| X-Large (+3/8"), this one | 117 g | 1.16" / 1.29" | XXL or XXXL | You're here |
JumboMax makes the STR8 Tech in three sizes. Between two? Since you're likely fighting a hook already, the bigger one is usually the better call.
Other JumboMax X-Large Grips
| Grip | Weight | Mid / butt | Feel | Pick it if you... |
|---|---|---|---|---|
| STR8 Tech Tour X-Large (this one) | 117 g | 1.16" / 1.29" | Firm | fight a hook and like a firm, weighted grip |
| STR8 Tech Wrap X-Large | 117 g | 1.16" / 1.29" | Softest, cushioned | fight a hook and want a soft, wrapped feel |
| UltraLite STR8 X-Large | 58 g | 1.16" / 1.29" | Light, non-tapered | fight a hook and want to keep the grip light |
| Tour Series X-Large | 123 g | 1.14" / 1.46" | Firm | want weight in the handle to smooth out tempo |
Weights and diameters from JumboMax, checked October 2026.
Doing the Whole Bag?
The 8-grip bundle covers your irons and wedges, and the 13-pack does the whole bag. Want everything in one box? The 13-grip kit comes with tape, solvent and a shaft clamp. Already have grips? Grab the installation kit (14 tape strips plus solvent) and follow our regripping guide.
Still comparing? Browse every STR8 Tech grip or the full JumboMax lineup.
