OFNA RACING 52205 JL .28 Max This is the Ofna JL .28 Max 4-Port Pull Start Nitro Engine.Ofna has tirelessly worked it's modifying magic again, applying it to their proven line of Max Engines. Utilizing their Max technology and combining it with big block power, the all new JL .28 Max pops wheelies, tears up the competition, and soars through the air with the kind of speed you've never thought possible.