Factory Effex (12-26232) B4 Seat Cover
Factory Effex B4 Seat Cover Fits Yamaha YZ250F/450F 14-15. The B4 features super durability high grip seat material to keep you in place, and heavy duty DuraTech 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 cover of choice.