Strings breaking near the frame? Inspect the grommets before changing the setup
A damaged plastic sleeve can put a sharp edge beside the string. Start with the break location, then identify the frame, pattern and replacement kit.

A tiny split inside a grommet barrel can damage a string where it passes through the frame. Tennis Warehouse’s maintenance guide identifies this as a route to premature breakage. If a string repeatedly fails near the hoop, photograph that location before the old stringbed is removed. The position gives the stringer a specific contact point to inspect.
Start with a view of the whole racquet and then a close view of the suspect hole. Include the inner exit, the outside strip and the nearest knot when present. Keep the frame’s orientation consistent between photographs. A useful note is “upper left, beside the tie-off” with a matching picture, rather than a general request for a more durable string.
Locate the contact point
The two plastic parts protect different contacts. A grommet barrel separates the string from the edge of the frame hole. The bumper along the top of the head protects the frame when it touches the court. Examine both surfaces: a tidy outer strip can sit beside a damaged inner barrel, while a scraped bumper may still have intact string passages.
Look for split, flattened, flared or missing barrels and for places where the string rests directly on the frame. Tennis Warehouse also lists exposed graphite and cracked or worn bumper material as replacement signs. These observations help define the repair request. They let the technician inspect the protection around the failure before changing gauge, material or reference tension.
| Observation | Contact to inspect | Useful record |
|---|---|---|
| Split or flattened inner barrel | String against the frame-hole edge | Close photo of the inner exit |
| Worn bumper with exposed frame | Outer head against the court | Top and side views |
| Repeated break beside a knot | Tie-off barrel and string route | Knot location and previous service |
| Old model with missing parts | Availability and exact kit identity | Full model, generation and pattern |

Order by the complete identity
Record the full model name from the frame, its generation and string pattern. Add the product code when it is printed or available in the manufacturer’s record. A shop can then check the hole layout and the specified replacement set. Terms such as “Blade”, “100” or “black frame” leave several different products in the same search.
Wilson’s Japanese pages illustrate why the last part of a name matters. Blade 100 V10 lists 16×19 and grommet code WR8454401001. Blade 100 Pro V10 lists 16×20 and WR8454301001. Both include 100 and V10, but the documented parts differ. This is a concrete reason to send the entire model name when asking a supplier.
A shared kit is also possible when the manufacturer explicitly lists it. Wilson’s Ultra V5 set names the 100, 100L and 100UL together. Its Blade 98 V9 set specifies the 18×20 pattern. Use those named compatibility lists as the ordering evidence. If a seller proposes another part, ask which manufacturer record supports that substitution before purchasing.
Plan the job before removing the old strip
Confirm that the replacement is available before dismantling the racquet. Tennis Warehouse notes that rare or older frames can require a longer search for the correct kit. A quote can separate the part, fitting work and restring. For a player with a match approaching, the practical decision includes delivery and workshop timing as well as the price of plastic.
Ask the stringer to record any existing customisation before removal. Weight tape or other additions may be near the area being serviced. Keep a photograph and note of their location so the work order says whether they should be retained. This preserves a useful description of the starting setup when the racquet returns from the workshop.
The installation guide describes a job that depends on alignment: clear the old pieces, inspect the exposed frame, then guide the replacement barrels through their holes. It specifically warns against crushing the tubes with an awl. For the owner, the useful question is whether every barrel seats correctly and protects the string path, including the longer barrels near the throat.
| Frame or compatibility list | Listed replacement code |
|---|---|
| Ultra 100 / 100L / 100UL V5 | WR8450401001 |
| Blade 98 18×20 V9 | WR8441301001 |
| Blade 100 V10 | WR8454401001 |
| Blade 100 Pro V10 | WR8454301001 |
Choose a temporary repair deliberately
Nylon tubing is described by Tennis Warehouse as a possible temporary option when a suitable set is unavailable or a limited area needs protection. Ask which hole it will protect, why it is suitable there and when it should be inspected again. Put that local repair on the work order so a later stringer knows where it was fitted.
Tubing and a new bumper address different contact points. A tube can shield the string through an individual passage; the bumper covers the outside of the head. If the bumper is worn through, discuss that exposed outer area separately. Otherwise a successful repair at one string hole could leave another part of the protection unaddressed.
For an older racquet, compare a confirmed replacement kit with a clearly described temporary solution. Include the condition of the frame, the extent of damaged plastic and the next opportunity for service. This makes the decision specific to the racquet in hand. A generic age limit or promised number of playing hours would add little to those visible findings.
Make the restring a useful inspection point
Before restringing, have the technician check the bare frame for loose material and sharp debris, as the Tennis Warehouse guide recommends. After fitting, inspect the inside exits and outside seating of the new pieces. A barrel folded during installation creates another contact issue, so resolving alignment belongs before the fresh stringbed is put under tension.
At collection, use the same photographs and orientation as the initial inspection. Ask to see the repaired locations and the exact part used. Check that the invoice or service note identifies the model, pattern and any tubing. These small details make the next discussion easier if a string fails again near the same area.
- Photograph the complete frame and the damaged area before the old strings are removed.
- Send the complete model name, generation, string pattern and available product code.
- Confirm the exact kit, parts availability and fitting/restringing quote.
- Record any weight tape or other customisation around the service area.
- Have the fitted barrels, tie-off passages and outer bumper inspected before restringing.
- Keep the part code and any tubing locations with the new string setup record.
Keep a service record for the next break
If you are also evaluating string durability, keep the replacement job visible in your setup history. Record the string model, gauge and chosen reference tension alongside the grommet work. Changing several elements together may be a reasonable service choice, but the record should preserve what changed so a later comparison starts from accurate information.
Your next useful observation is the location and circumstances of any later break. Note whether it occurred near the repaired hole or elsewhere, and take a new photograph before removal. A successful service record connects the initial damage, the fitted part and the follow-up observation. It gives the next technician something concrete to investigate instead of repeating the same equipment guess.
Sources and further reading
- Tennis Warehouse — How to Change Grommets on Your Racquet | Tennis Warehouse
- Wilson — Ultra 100/100L/100UL V5 Bumper & Grommet Set | Wilson Sporting Goods
- Wilson — Blade 98 (18x20) V9 Bumper & Grommet Set | Wilson Sporting Goods
- Wilson — BLADE 100 V10 — Wilson Japan product specifications
- Wilson — BLADE 100 PRO V10 — Wilson Japan product specifications
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