15" Cobra R-Series / Siege Bolts

15" bolts for Cobra R-Series and Siege

Explore our 15" crossbow bolts for the EK Archery Cobra system, including the Cobra Siege and compatible R-Series configurations. Always check that the bolt is suitable for your specific crossbow, magazine and power configuration.

Choosing 15" Cobra R-Series / Siege bolts

The longer 15" R-Series bolts are used with various configurations of the modular EK Archery Cobra platform and are particularly relevant to the Cobra Siege. Within this system, however, bolt length alone is not enough to determine correct compatibility.

When selecting a bolt, also consider its weight, material, nock and compatibility with the crossbow and magazine being used. With modified or higher-powered configurations in particular, the bolt must not only fit physically but also be suitable for the power of the crossbow.

If you use a magazine system, also check whether it supports 15" bolts. Some magazines are designed exclusively for short R-Series bolts, while other systems can accommodate both short and long R-Series bolts.

Looking for shorter bolts for the Cobra platform? The Crossbow Bolts section also includes a dedicated category for 7.5" Cobra R9 / Adder bolts. Conventional full-size bolts can be found in the 16–22" crossbow bolts category.

Important when choosing 15" R-Series bolts

A bolt that physically fits your crossbow or magazine is not automatically suitable for use. Always check the specified bolt type and bolt weight for your particular Cobra configuration.