Free Hub Timeline
Correct identification of your free hub body or free hub will save time and frustration. Zipp free hubs have evolved over the years in conformance with the changing industry standards.
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Easy identification - can you spot your free hub?
1999 and earlier
Shimano and Campagnolo bodies looked very similar. The Campy body (left) had a single wider spline, groove depths were the same. This refers to our Balistic and Zipp 217 and 377 models.
Campagnolo changed their design, giving rise to deeper grooves different angles, a stepped spline and variable spline / grove widths, e.g. compare the two free hubs on the left with the two Shimano free hubs on the right, which have shallow evenly spaced splines and groves.
Champagne color with a solid back ring between the splines and the pawl carrier, Campagnolo on left, Shimano on the right. Bearings = 2 x 6901RS
202P and 202W models 202P
This where we find the largest confusion. 202P has the grooves extending all the way across the main body with a small lip on the splines. 202P Campagnolo on left, 202P Shimano in the center. The 202W (Shimano) has a solid silver ring at the back between the pawl carrier and the main body, the grooves are blocked. The right hand image shows 202P free hubs Campagnolo left and Shimano right.
Free hubs Zipp 182 - 208 hubs 2005-2008
Machined and forged / Shimano red Campagnolo blue
Left, the difference between machined (left) and forged (right) Shimano free hub bodies is a dull, deeper maroon, rougher surface finish and a scribed ring 1/3 towards the seal between the body and the red pawl carrier in the forged body. Since mid year 2005, Shimano free hubs are red and Campagnolo are blue. These bodies have 2 x 61082 bearings and a red seal between the pawl carrier and the main body.
Free hubs Zipp 188 hubs 2009 – 2012
This image shows the correct orientation and placement of pawl springs and pawls in the 188 free hub body.
Major changes in pawl design and shape. Each pawl now has its own leaf spring. Pawl socket ring is scalloped, seal is black. These free hubs are NOT interchangeable with earlier 182 or 208 models and are only sold in a conversion kit with seals, shims and end caps. This free hub is used with the silver V6 2009-2011, gray or black V7 2012 hubs and cannot accommodate Shimano 11 speed. Note the 61803 bearings to accommodate the larger 17mm axle.
2013 Zipp 188 V8 free hub for 11 speed
1.85mm spacer needed to run 10 speed with 2013 V8 11 speed free hub
The 11 speed free hub is not compatible with the previous version (V7) of the 188 free hub. It is recognized by the yellow laser etching and is assigned an individual serial number. This free hub must be used with the 2013 black axle and non-drive side end-cap. To run 10 speed with this free hub, you will need the extra spacer (supplied with new wheels and conversions). In March 2013 the spacer was changed to a black color. Install this spacer with the smooth side towards the spokes and place before the largest cog.
2014 free hub changes
In mid-August 2014 we changed free hub forged vendors to improve tolerances for both SRAM / Shimano (red) and Campy (blue) free hubs. The updated free hubs are identified by two indentation dots on the pawl pocket and no lines scribed across the splines. The new free hubs have noticeably sharper spline edges.
Bearings commonly used in Zipp hubs
We have collected these bearings together to help you identify what you are dealing with.
Please refer to the hub identification page to see which bearing go with which hubs and to the bearing specification page for dimensional data.
82/182/208 End Caps
2004 182/202 2004 - 202 / 2006 - 208 2006 182/208 with curves
End caps have changed to accommodate the plastic ring that holds on the woven carbon cap. Straight pull end caps are longer than traditional hub end caps. The 2006 version has an additional curved shape. There are different end caps for the 182 disc hub.
188/88 End Caps
188 rear and 88 front / 88 front and 188 campy rear
Rear 188 Shimano/SRAM cap on the left. Cap is taller than 88 front cap. thicker flange, sharp outside flange edge, thicker dropout diameter than front cap, dropout edge is flat with scribed circles. Front 88 cap is on the right, beveled outside flange edge, drop out opening is beveled. Rear Campy 188 cap, tallest of the three. blue not smoke color, flange is concave and thicker than 188 Shimano/SRAM. Early end caps tended to fall out before installation in the wheels. This fit was fixed during mid 2009. Note during November 2009 we changed the rear Shimano end cap color from smoke to red. In 2013 the 188 (V8) axle was strengthened and the inner diameter reduced by 1.0mm. The new black drive-side rear end cap has a smaller diameter, no “O” ring and is a very tight press fit.
Flash-Point free hubs
From 2005 to 2008 we used black JoyTech hubs then swapped to KT hubs.
JoyTech Free hubs 2005-2007
KT free hubs 2008-
The red free hub is Shimano 10 speed, bronze is Shimano 9 speed or Campy 9/10 speed.
PowerTap free hubs
Note light tan color and striking red seal. Example is a Campy version