When it comes to single speed, we know you deserve the best. 108 points of contact narrows down free play between coasting and pedaling. 9 pawl engagement guarantees direct pedal power transition. Most of all, the sound of coasting just makes you feel so good. Precisely machined and built in Taiwan.
In 2002 Doug White decided the world needed a better freewheel. Until then singlespeeders seemed to be content not knowing if their freewheel would last a week or a year, or fail a mile away from home or hundreds of miles. But what was certain was failure. Overnight the ENO freewheel became the standard to measure everything else against.Starting with a driver made from heat treated 4130 steel that houses 3 heat treated S7 tool steel pawls (6 on the Trials model), we add an 8620 steel case-hardened and electroless nickel-plated outer gear turning on an Enduro chromium steel bearing. We basically designed all the weak links out of the system. And because everything wears out eventually, we designed them to be rebuildable.ENO single and DOS ENO double freewheels feature 36 points of engagement while the Trials freewheels utilize a thicker outer gear (the base, not the teeth) and 72 points of engagement.Our freewheel bearings are ABEC 3 or 5 grade depending on freewheel type, are made from chromium steel, and use a special Mobil XHP222 extra high pressure grease. Note: All freewheels can use either 3/32” or ⅛” chains except 16T ENO single and all DOS ENO double freewheels (see FAQ below)23T freewheels discontinued on 3/10/2022 FAQCan I swap my lockring for a different color? No. Each freewheel size/model uses a specific lockring which we anodize a different color to make identification easier.Blue: 16T ENO single, 16/18 and 16/19 DOS ENO doubleRed: 17T-23T ENO single, 17/19 DOS and 20/22 DOS ENO doubleGreen: Trials 18T, 20T, 22T Why can’t I run an ⅛” chain on the 16T freewheel? Because of the size of the driver and the bearings inside the gear, we are limited in how small we can make the diameter of the base of the gear. On the 16T you’ll notice a groove machined on the base next to the teeth which is needed to clear even a 3/32” chain. For an ⅛” chain that groove would need to be a bit deeper to allow the chain to fully seat down on the teeth but we can’t make the groove deeper without sacrificing the strength of the gear. Running an ⅛” chain will prematurely wear out the chain and gear. Why can’t I run an ⅛” chain on DOS freewheel?Because there’s not enough room in between the teeth for the wider ⅛” chains. I’m a big/burly/fast rider. Will I break the standard freewheel and should I go with a Trials instead?The standard freewheels are really, really tough and we haven’t seen an issue with failure on big/burly/fast riders. The main reason people want the Trials version is for the increased engagement (72 points vs 36 points). Can I rebuild my White Industries freewheel?You bet. We sell the outer gears (they come with the bearing installed), bearings, pawls, springs, drivers, seals and lockrings if needed (did we leave anything out?). Basically, we’ll sell you whatever parts you need to get your freewheel working again.See Parts>Freewheel Parts SpecsThreads: 1.370” x 24TPIENO single and DOS ENO double freewheels have 3 pawls and 36 points of engagementTrials freewheels have 6 pawls and 72 points of engagementLockring colors:Blue: 16T single, 16/18 DOS and 16/19 DOSRed: 17T-23T singleGreen: Trials 18T, 20T, 22TFreewheel measurements for chainline calculations:All freewheels are 18.4mm wideOn ENO single freewheels (standard and Trials) center of teeth are 9mm from the inner base of the threadsOn ENO DOS double freewheels inside teeth are 6.1mm from the inner base of the threads and the outside teeth are 11.8mm from the base. Teeth are 5.7mm apart center to centerToolsWhite Industries part #FWTOOLE 4-prong freewheel remover toolNeeded when removing our freewheels from our ENO ECC (eccentric) hubsWorks on our freewheel on standard axle hubsWorks on other freewheels with 4-prong tool interfacePark FR-6 4-prong freewheel remover tool will work on our freewheels mounted on standard (non-eccentric) hubsPark SPA-2 (the red one) pin spanner needed to remove the freewheel lockring BearingsFreewheel ModelEnduro Bearing Inside/Outside/Width (mm)ABEC Rating/Material16 single (blue)BB67082RS-6W 40x50x63/chromium steel17-23 single (red)6180840x52x75/chromium steel18, 20, 22 trials (green)6180840x52x75/chromium steel16/18 & 16/19 DOS (blue)BB67082RS-6W40x50x63/chromium steel17/19 & 20/22 DOS (red)6180840x52x75/chromium steel