KB 9.25:1 YLIKOKO männät HD TC 88" TO 95"
KB forged aluminum mäntäsarjoihin sisältyvät männät, männänrenkaat ja -tapit sekä männäntapin lukkorenkaat.
Hyvät asennusohjeet mukana.
Muuttaa 88" koneen 95" (1546cc) kokoiseksi.
Käy suoraan alkuperäisiin sylintereihin, porautat vain sylinterit 3 7/8" ylikokoon.
Normaali 4" iskunpituudelle sopiva.
Puristussuhde 9.25:1
Malli: KB 904C
Sopii: Harley-Davidson 99-06 TC/B
Valitse koko ja lisää ostoskoriin
88" (3-3/4") to 95" (3-7/8") big bore conversion forged piston set. 9.25:1 CR with 85cc head. Piston weight 350gr. Piston pin weight 89gr. Piston pin dia. .927" / offset. Head type: Dome with -6.7cc. Compression height 1.263". Bore 3.875". Stroke 4.000". Rod length 7.667". Cyl. length 4.938". All KB forged pistons are made from 4032 alloy, a 11% silicon alloy that is formed in a forging press. Forging aluminum gives a superior strength and structural integrity on a molecular level, after which it is fully machined. The combination of this alloy and the forging process allows the piston to flex under detonation, or pre-ignition, giving the best resistance to cracking. Although 4032 has a low expansion rate, it is higher than the cast Hypereutectic. Therefore forged KB pistons will require about .001" wider piston to wall clearance. Pistons are sold as sets, complete with wrist pin retaining rings, wrist pins and piston rings.
