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Which axle systems do the hubs support?

All mountain bike hubs support quick release and 15mm through axle front, rear hubs support 135mm standard quick release and 142x12mm through axle standards. They are easily converted through a simple end cap swap using the same axle. Your choice of end caps is available at time of purchase. We will soon be offering Boost 148mm rear and 110mm front hubs as well.

We do not have a 150mm rear hub or a 20mm through axle front hub at this time.


What size cog sets do you have do you have that work with the KH-1 hub? 

Currently we offer 10 speed 11-36 mountain bike cog sets. They work with both Shimano and SRAM 10 speed drivetrains. 


What does the hub sound like?

Drive System Lubrication:

The drive system comes lubricated with Dumonde Tech Freehub Oil stock. We recommend a light oil such as the Dumonde Tech or similar for minimum friction. A grease can be used which quiets the drive system sound a bit but will add coasting drag. 


How-To Videos: 

Check out our YouTube channel for our how-to videos!


Do you have a max rider weight?

Our hubs do not have a maximum rider weight. The maximum rider weight for rims is 225 lbs.


Are your hubs 11 speed compatible?

Yes, the KH-1.5 and KH-2 hubs are 11 speed compatible. The KH-1 can use the  XX 11-36 10 speed cassette.

The KH-1.5 and KH-2 are 11 and 10 speed Shimano/SRAM free hub body compatible as well as SRAM XX1/XO1/X1 compatible with the XD Driver Body option. A 1.8mm spacer is required to run 10 speed cassettes on the 11 speed freehub body, not included.


Do you offer a through axle disc hub compatible with 11 speed for cyclo-cross?

Yes! Both our KH-1.5 and KH-2 are quick release and through axle disc brake 11 or 10 speed compatible.


What kind of bearings do you use?

All bearings are high quality Enduro Bearings.

Front hubs utilize 2x 71803 Enduro angular contact bearings.

Rear drive side wheel bearing is an Enduro 71903, rear non-drive side wheel bearing is an Enduro 71803 and the small cassette carrier bearing is an Enduro 6803. The angular contact bearings mimic a cup and cone system and offer complete ball contact for longer life while still having the advantages of a fully enclosed cartridge bearing.


Are the hub bearings adjustable?

Yes, front and rear hubs have adjustable pre-load. The non-drive side of the axle has an adjustable bearing pre-load collar with a 1.5mm hex head bolt. Loosen the hex bolt and tighten the load collar clockwise to contact the inner bearing race. Only a very light load is required, 7 in-lbs to be exact. Tighten the load collar until you feel contact and back it off about an eighth of a turn. The bearings should spin freely and not have any play. Excess load will cause bearings to wear prematurely. It's better to live with a tiny amount of play than to over tighten causing increased drag and shorter life.


Wheel Building Specs:
 Hub Drive Side F-C (mm) Brake Side F-C (mm) Drive Side Diameter (mm) Brake Side Diameter (mm)
KH-1 Front
KH-1 Front Lefty
KH-1 Rear
KH-1.5 Front
KH-1.5 Rear
KH-2 Front
KH-2 Rear
KH-2 Front Fat Bike
KH-2 Rear Fat Bike


Rim ERD (mm) Rim Offset (mm)


KR-RC and KR-RT 572 2.3


KR-29 602 2.5


KR-27.5 568 2.5



Tire Compatablity and Installation Tips:

We have designed our 29" mountain bike rim to have a tight bead fit which allows easy inflation via a floor pump and the ability to run low pressures without burping. Due to inconsistencies in tire manufacturers some tires fit much tighter than others and can be hard to get on and off. If this is the case, we recommend using a different tire. Maxxis and Specialized tires can be installed by hand most of the time. Schwalbe (especially SnakeSkin versions), Hutichson and Geax tires often fit extremely tight. If they make your favorite treads, we advise caution and patience.

Use the following tips to ease tire installation:

  • Start with the first bead on the side that has the valve closest to the edge of the rim (due to the asymmetric design)
  • Start the bead on both sides 180 degrees from the valve, finishing at the valve itself
  • Ensure the bead is all the way in the center channel around the circumference as you finish installing each bead
  • The use of a lubricant such as soapy water or Uncle Dick's Bead Slip often helps the process
  • Only use plastic tire levers, never use metal tire levers to install the tires! This can damage the bead and cause catastrophic failure. The Kool Stop Tire Bead Jack is a great tool to ease bead installation. 

Does mud get stuck inside the relieved design of the KH-1?

Actually, although you think it would, it hasn't proved to be an issue at all. When the wheel is rotating, spokes are spinning by hundreds of times a minute and act as a shield to block out any debris. Have we got dirt on them? Yes. Does it wash right out? Yes. Is the amount of dirt accumulated less than the weight that the cutouts save? Most likely. We will do some formal testing on that soon...

Is the cassette included of the KH-1?

No, the price of a SRAM XX or XX1 cassette is not included in the cost of the hub. But the cost of reworking to fit on our hubs is. If you have an existing cassette, send it in and we will modify it. Or, buy one from us for the MSRP of a SRAM one.


All hubs and rims come with a limited three (3) year manufacturer warranty on defects in material or workmanship from the date of purchase to the original owner. If Kappius Components determines the product to be defective during this period, we will either repair or replace the product at Kappius Components discretion. This warranty does not apply to defects caused by negligence, accidents, misuse, incorrect installation, modifications, exceeding maximum rider weight, exceeding maximum inflation pressure, exceeding maximum spoke tension and/or normal wear and tear. Cosmetic issues such as decals, clear coat and anodizing scratches are excluded from this warranty. This warranty does not apply to parts not manufactured by Kappius Components (ex. spokes, nipples, valves). For an issue related to these parts, the manufacturer of those parts must be consulted. This warranty is non-transferrable and is only valid for the original owner. Valid proof of purchase is required for a warranty claim. For warranty inquires, please contact


Crash Replacement:

Crash replacement offer includes replacement of one rim at a price of $275. Does not include new spokes or nipples if required, these are $3 per spoke and nipple. To qualify for the crash replacement a copy of the original order for the wheel(s) or proof of purchase is required. The $275 crash replacement can only be used one time per rim. The damaged rim must be returned to Kappius Components to be examined. Shipping and handling costs are not included. For warranty/crash replacement, contact