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DID 420 NZ3 136 G&B motorcycle chain
0 HTHS viscosity at 150°C (302°F) ASTM D4741 4
9 mm²/ Viscosity Index ASTM D97 154
Twin Air 156140
BMW 13 71 7 712 317
JT front sprocket JTF339.18RB DID 420 NZ3 136 G&BJT front sprocket JTF339. 18RB JT Sprockets is the world's leading manufacturer of aftermarket sprockets, constantly raising the industry's standards for quality and service. We are committed to supplying the most durable, best quality sprocket available in the marketplace worldwide. This is why we produce and sell more sprockets than all the other aftermarket brands combined. JT sprockets are made using only the best available materials. Aviation