Stud Replacement
When replacing studs, it's essential to choose the correct thread size and stud length to ensure safety & grip. Stud lengths generally range from 11mm to 18 mm, with a maximum allowed length of 21mm according to World Rugby regulations.
Boots and Compatible Studs Threads: (Note: M5* indicates that the boot takes studs with an M5 thread but the M6 stud wrench works best for tightening these)
Brand | Boot |
Stud Configuration Metal,Molded |
Stud Thread Type | Front Stud Length | Back Stud Length |
adidas | Adizero RS15 Elite SG | 6S, 5 molded | M6 | 8 mm | 11 mm |
adidas | Adizero RS15 Pro SG | 6S, 6 molded | M6 | 11 mm | 15 mm |
adidas | Adizero RS15 Ultimate SG | 6S, 6 molded | M6 | 11 mm | 15 mm |
adidas | Kakari Elite SG | 8S, 1 molded | M5 | 15 mm | 21 mm |
adidas | Kakari RS SG | 8S, 1 molded | M5 | 15 mm | 21 mm |
adidas | Kakari SG | 8S, 1 molded | M5 | 15 mm | 21 mm |
adidas | RS15 SG | 6S, 5 molded | M6 | 8 mm | 11 mm |
Canterbury | Phoenix 2.0 Elite SG | 6S, 3 molded | M5* | 13 mm | 15 mm |
Canterbury | Phoenix 2.0 Pro SG | 6S, 3 molded | M5* | 13 mm | 15 mm |
Canterbury | Phoenix 2.0 Team SG | 6S, 3 molded | M5* | 13 mm | 15 mm |
Canterbury | Phoenix Genesis Pro SG | 6S, 3 molded | M5* | 13 mm | 15 mm |
Canterbury | Phoenix Genesis Team SG | 6S, 3 molded | M5* | 13 mm | 15 mm |
Canterbury | Phoenix Raze SG | 6S, 3 molded | M5* | 13 mm | 15 mm |
Canterbury | Speed Falcon Elite SG | 6S, 3 molded | M5* | 11 mm | 13 mm |
Canterbury | Speed Falcon Pro SG | 6S, 3 molded | M5* | 11 mm | 13 mm |
Canterbury | Speed Falcon Team SG | 6S, 3 molded | M5* | 11 mm | 13 mm |
Canterbury | Speed Infinite Elite SG | 6S, 3 molded | M5* | 11 mm | 13 mm |
Canterbury | Speed Infinite Pro SG | 6S, 3 molded | M5* | 11 mm | 13 mm |
Canterbury | Speed Infinite Team SG | 6S, 3 molded | M5* | 11 mm | 13 mm |
Canterbury | Stampede Groundbreak Elite SG | 8S, 3 molded | M5 | 18 mm | 18 mm |
Canterbury | Stampede Groundbreak Pro | 8S, 3 molded | M5 | 18 mm | 18 mm |
Canterbury | Stampede Groundbreak Pro SG | 8S, 3 molded | M5 | 18 mm | 18 mm |
Canterbury | Stampede Groundbreak Team SG | 8S, 3 molded | M5 | 18 mm | 18 mm |
Canterbury | Stampede Pro SG | 8S, 3 molded | M5 | 15 mm | 15 mm |
Gilbert | Cage Pace Pro 6S SG | 6S, 7 molded | M6 | 11 mm | 13 mm |
Gilbert | Cage Torq 6S SG | 6S, 6 molded | M6 | 8 mm | 11 mm |
Gilbert | Icon 6S SG | 6S, 7 molded | M6 | 11 mm | 13 mm |
Gilbert | Icon 8S SG | 8S, 2 molded | M6 | 11 mm | 11 mm |
Gilbert | Sidestep X20 6S Power SG | 6S, 6 molded | M6 | 8 mm | 11 mm |
Mizuno | Monarcida Neo III Select SG | 8S | M5 | 13 mm | 15 mm |
Mizuno | Waitangi II CL SG | 8S | M5 | 15 mm | 15 mm |
Studs and Stud Packs: shop for studs
Brand | Stud Pack | Stud Thread | Stud Lengths Available |
Canterbury | Long Performance Studs | M5 | Pack of: 13mm & 15mm |
Canterbury | Short Performance Studs | M5 | Pack of: 11mm & 13mm |
Canterbury | Stampede Performance Stud | M5 | 18mm |
WRS | All Surface/All Weather M6 Kit | M6 | Pack of: 6, 8, 11, 13, 15, 18mm |
WRS | All Surface/All Weather M5 Kit | M5 | Pack of: 10, 13, 15, 18, 21mm |
WRS | M5 Plastic Turf Studs | M5 | 10mm, 13mm |
WRS | M6 Plastic Turf Studs | M6 | 8mm or 11mm |
WRS | M5 Studs (Metal) | M5 | 15mm, 18mm, 21mm |
WRS | M6 Studs (Metal) | M6 | 6mm, 8mm, 11mm, 13mm, 15mm, 18mm |
adidas | Aluminum TRX Long Stud Pack | Pack of: 11mm & 15mm | |
adidas | Adipower Stud Pack | Pack of 8mm & 11mm | |
Gilbert | Aluminum Stud Pack | Packs of 15/18mm or 18/21mm |
Most boots arrive with a stud tightening tool. We recommend that you tighten your studs before wearing your boots for the first time.
Outsoles
Metal vs Molded Studs
Metal Studs (Replaceable)
- Replaceable studs made of aluminum
- Seen on Soft Ground Boots
- Allow players to tailor their boots with the stud lengths they prefer based on field condition, playing style and position.
- Metal studs wear more evenly than molded studs. If you take care of your boots by cleaning the leather and replacing the studs when they wear down, your boots will last longer than molded boots
Molded Studs
- Permanent studs made of rubber or another non metal material
- Seen on Firm Ground Boots, soft ground hybrid boots, Artificial Grass Field Boots and Turf/Hard Ground Boots. Firm ground pitches are usually in sunnier, dryer climates.
- Usually tailored to backs
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Thread Size
Thread Size: Rugby boot studs screw into threaded sockets in the sole of the boot. These threads must match exactly to avoid damage or loosening during play.
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Stud Length
Stud Length: The ideal stud length depends on both the playing surface and the player's position. Longer studs provide better grip on soft ground and are typically preferred by forwards, while shorter studs are favored by backs who require greater agility and quick movement.
Studs are available in 8mm - 21mm lengths
Shorter:
Shorter studs (8mm-15mm) are typically seen on firm ground
Backs push less than forwards and need less ground grip. They usually wear shorter studs for lighter boots, allowing quicker movement and easier pivoting.
Longer:
Forwards, particularly in scrums, depend heavily on sustained pushing and drive, requiring maximum traction. To achieve this, they typically use longer studs for enhanced grip on soft or wet surfaces.
While most players generate power from the forefoot, longer rear studs play a critical role in stabilizing body posture and promoting a forward-leaning position. This not only helps maintain balance under pressure but also reduces the likelihood of being driven backward during set pieces or close-contact phases.
Outsole Designs
Soft Ground Outsole Designs
6 stud
- 4 up front and 2 on back heel
- allows for faster foot turn over for cutting and moving
- tailored to backs and loose forwards who want a lighter boot for cutting
and pivoting

8 stud
- 6 up front and 2 on back heel
- slower than 6 stud design but has better traction
- tailored to tight 5 players or loose forwards who want increased traction and grip

7 stud (less common)
- 5 up front and 2 on back heel
- balance of speed and grip
- geared toward loose forwards
Firm Ground Boot Outsole Stud Design
- consist of 10-14 molded studs made of rubber or another non-metal material
- grip better than soft ground boots
- tailored to all positions in dryer parts of country
- if you only own one type of boot, this is good unless you live in a very wet part of country as they can be used on soft but not wet fields
- studs are bladed, conical or a mixture of both. The more one cuts and jukes, the more bladed the design should be, the more one twists and pivots, the more conical the design should be.


Turf/Hard Ground Boot Studs
- short, usually rubber studs uniformly across the outsole
- great force displacement
- grips ground with shallow studs that just penetrate surface of field