Inner Primary Bearing/Seal Kit 25-3103 HD

ALL BALLS starter motors are manufactured with all new components that have been fine-tuned for starting the H-D V-twin engine. Our clutches utilize 20% oversize rollers, and the idler gears are manufactured from cold-headed steel. End frames are cold-chamber die cast and machined on precision fixtures. Armature hairpins are resistance-fused to the commutator. All starters are supplied with a 10/32 threaded output shaft, and a conversion bolt for the earlier 1/4-20 threaded output shafts.
Quality design and construction of every All Balls piece meets the toughest standards and conditions – from daily commuting to full-on racing, all older bearing and seal designs are upgraded to the best and latest specs and designs.