This is the FX upgrade to our previous bestseller -- the B3. The B4 features all new high-durability Super Grip seat material to keep you in place, and heavy-duty DuraTechTM ballistic nylon reinforcements to prevent knee brace wear. The seat includes raised OEM logos, just like the TC4. Track-tested by the FX race teams, the B4 is the pro riders seat of choice.
Heavy-duty grip pattern top material.
Improved ballistic material protects against knee brace damage.