The Sapim Polyax 13G is a high-quality brass spoke nipple with a self-aligning ball head. Thanks to the movable head section, the spoke nipple adapts better to the angle between the spoke and the rim. This reduces the lateral load on the spoke and creates a more reliable spoke connection.

 This 13G version is suitable for thicker spokes, such as strong e-bike, transport bike, and cargo bike spokes. The Sapim Polyax is therefore an excellent choice for professional wheel building and heavily loaded bicycle wheels where an optimal spoke alignment and durable spoke tension are important.

 Key features

 
 Self-aligning spoke nipple with Polyax head.
 
 Suitable for 13G spokes.
 
 Made of high-quality brass.
 
 Reduces the buckling load on the spoke at the rim.
 
 Ensures better alignment between spoke and rim hole.
 
 Suitable for heavily loaded wheelsets.
 
 Ideal for e-bikes, transport bikes, and cargo bikes.
 
 Suitable for professional wheel building and repairs.
 
 Can be combined with matching Sapim spokes and spoke lengths.


 Application
 The Sapim Polyax 13G is used in, among other things:

 
 E-bike and speed pedelec wheels.
 
 Rear wheels with high driving forces.
 
 Transport bikes and cargo bikes.
 
 Bicycles with a lot of luggage or a high total weight.
 
 Wheelsets with strong 13G spokes.
 
 Rims where the spoke emerges from the rim hole at a relatively large angle.


 Advantages of the Polyax shape
 With a traditional spoke nipple, the spoke can bend sharply at the rim under tension. This can lead to extra stress on the spoke and the spoke nipple. The spherical head of the Sapim Polyax aligns better with the spoke line, allowing the spoke to run straighter through the nipple.

 This helps to limit stress concentrations and supports even, sustained spoke tension. The Polyax shape offers clear advantages, especially with wide hubs, asymmetrical rims, and heavily loaded wheel constructions.

 Technical information

 
 Brand: Sapim.
 
 Type: Polyax.
 
 Size: 13G.
 
 Material: brass.
 
 Design: self-aligning ball head.
 
 Application: wheel construction and repair.
 
 Suitable for: 13G spokes, including strong e-bike and transport bike spokes.


 Before ordering, check whether the spoke nipple is suitable for the spoke used. A 13G spoke nipple has a larger thread size than a standard 14G spoke nipple and is therefore not interchangeable with thinner spokes. Additionally, pay attention to the correct nipple length and compatibility with the rim.

 Professional quality for strong wheels
 With the Sapim Polyax spoke nipple 13G, you choose a durable and precisely aligned connection between spoke and rim. This spoke nipple is particularly suitable for robust wheelsets that must handle high loads daily. Combine the Polyax 13G with the correct spoke, rim, and spoke tension for a reliable and durable bicycle wheel.