Klikový hřídel 81.3, 1300, 1.75″

Forged EN40B crank, 1.75″ 1300 big end journal for 1300 block with stronger keyway fitted for timing gears. Forged EN40B steel nitrided Race cranks are considered the ultimate in specification, even over the “billet” type. This is mainly because the grain pattern of a forging follows the shape of the webs and bearings whereas the billet type is machined across the grain. We stock all the forged type. All have superior oil distribution galleries, and heat treated for maximum durability. All are machined to fit 1275 non-S center main SIZE OF 1.211 except THE C-AEG479 which is for the Cooper “S” Block.All cranks have been re drawn to benefit from latest technology by having the larger crank webs designed to reduce whip and resistance at high revs giving smoother running and easier balancing, plus being mass centre balanced.Always check gearbox for clearance with these large webs. The bored holes for the big ends reduces weight of the crank and does not require drilling through the large counter balance C shape webs.