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HubDoctor

agosto 5, 2026

6903-2RS (2 PIECES), 6803-2RS (2 pieces)HYBRID CERAMIC Si3N4 4 PIECES

6903-2RS (2), 6803-2RS (2) HYBRID CERAMIC Si3N4 4 PIECES 4 Qty. top quality (ABEC 7) hybrid ceramic sealed ball bearing. Beautifully ground and polished chrome steel races. Dual rubber seals provide a light no drag fit on the inner race. Black ceramic Si3N4 G5 grade balls provide the best wear resistance and lowest rolling resistance of hybrid style bearings. They are lubricated with synthetic oil for low rolling resistance. Perfect for bicycle hubs, or any place a conventional version is used. Combined shipping on international orders but please inform us as soon as you win an item that you are planning to bid on or purchase multiple items. We will credit your invoice to reflect the combined shipping. Description: * Item: Double Sealed Ball Bearings * Type: Deep groove radial ball bearings * Material: Chrome Steel Races * Balls: Si3N4 Ceramic G5 (Silicon Nitride) Check out our other items, Including our HubDoctor® Mavic® Freehubs Rebuild Kits The cost-saving solution for rebuilding Mavic® cassette hubs.Seal color can be black or yellow but the specs are the same.
agosto 3, 2026

NEW! HUBDOCTOR PRO MAVIC FREEHUB CONVERSION KIT HYBRID CERAMIC BEARINGS & PAWLS

The HubDoctor® Pro FULL HYBRID CERAMIC Ball Bearing Conversion Kit for Mavic® Freehubs ~ MTB and Road Plus HubDoctor Pawls Note: For 2013 and newer see our listing for 2013 and up HubDoctor Pro kit. The 2013 model year uses a 9mm drive side axle and a silver outer bearing retainer cap. Please note: Does not fit the aluminum ITS-4 freehub.Get rid of the plastic bushing once and for all! Runs quieter too! Fits seamlessly into your hub, no special spacers required; looks identical from the outside. (The freehub bearings only spin when you are coasting). Don't replace your worn out hub (see last picture) - rebuild it - with HubDoctor® PRO! Convert your Mavic® Shimano or Campy Freehub to a full CERAMIC ball bearing system. Please note the photos of both of these hub types in pictures. The freehub is not included; this kit upgrades your freehub whether it is a Campy or Shimano type. The New HubDoctor® PRO kit features a dual sealed Hybrid Ceramic ball bearing with a full complement of 56 Si3N4 balls. ****The ultimate upgrade for Mavic® MTB or Road wheels using the FTS-L and FTS-X freehubs! Weighs only 12 grams!**** Fits Mavic® ROAD and MTB wheels with plastic inner bushing: Ksyrium, Aksium, Cosmic, Helium, Crossmax SL-Enduro-XL- SLR-ST-29-SX-UB, Deetraks, Deemax, Crossland, Crossland, Crosstrail, Crossride UB, R-SYS, Cosmic Carbon SL, Comet Route, Speedcity with FTS-L and FTS-X hubs (42.50mm or 1.67" long), 2001 to 2012. If you have a plastic bushing in the freehub this kit will fit. Wheels made after 2001 with magnetic freehub bodies are included in this group. Kit contents: inner and outer ceramic ball bearing (Si3N4), 6061-T6 aluminum freehub adapter, 1 outer seals, 1 bearing spacer, 1 sanding tool and sand paper, HubDoctor Pawl kit, detailed instructions to walk you through installation. Please note: A new seal has been designed for 09 Crossmax SLR, ST, 29SS, R-SYS and others using this style design. From the non-drive side of the hub you will see a "keyhole" design where the spoke ends fits into. The external lip seal can be removed in these applications. The bottom line is that the kit will fit any of the Mavic freehubs using the plastic bushing and two pawl design. What our customers are saying about our HubDoctor® Pro Kit: PERFECT Solution, PERFECT fit, GREAT engineering, Superb Value, A+++++Buyer. This is how the hub should have been designed! Easy install, great instructions. Great Product, Better Than The OEM Set-Up, Worth Every Penny! Awesome product. Installed within minutes. Works great; saved a bunch of $$. Easy to install. High quality product. What else can I say? Thanks HubDoctor! 5 star product. After install; it is flying!! Should had 1 for ur self!! Just serviced after 2500 miles mostly mud and snow! Perfect! The outer bearing is a super smooth running Si3N4 ceramic ABEC 7 sealed ball bearing. The inner bearing spacer is included. A special light contact outer lip seal keeps out dirt and water. An Extra adapter seal is included in the kit. If you have a worn out hub journal, (see last picture), our new The HubDoctor® Pro kit will save you the cost of replacing the main hub since the new inner bearing sits behind the standard bushing journal on an unworn surface! Did you know the Mavic® freehub body shell is made of hardened steel and is practically indestructible! What wears out is the bushing and then you have to replace the entire hub and you’re stuck with an expensive paperweight! The new The HubDoctor® Pro Ball Bearing kit will fix and upgrade your wheel set for less than the cost of a new freehub! And with this new hybrid ball bearing kit you can eliminate replacing the bushings and a source of wear on your hub. Installation is similar to tapping or pressing in a headset and can be done in 30 minutes. Included with your kit are step-by-step installation instructions that walk you through every step, so it makes it easy to service your own freehub! Shipping is free in the USA! We ship World Wide! We ship Daily! Please Note: Photo 5 shows the bearing with the outer seal removed for illustration purposes only. This kit does not contain the freehub body or assembly, but is shown for demonstration purposes only. The HubDoctor® Pro Mavic® Cassette Hub Overhaul Kits The cost-saving solution for rebuilding Mavic® cassette hubs. Check out our other items.
agosto 2, 2026

CRANK BROTHERS 5050 2 AND 3 2011 TO PRESNT PEDAL BALLNEEDLE BEARING KIT

HubDoctor CRANK BROTHERS 5050 2 AND 3 2011 TO PRESENT SPLIT BODY TYPE BALL BEARING NEEDLE BEARING KIT (REBUILDS 2 PEDALS) Each HD Basic Pedal Rebuild Kit includes 2 high quality inner needle bearings and 2 high quality shielded outer ball bearings. All the other parts can be re-used if your pedals are complete and undamaged. Other kits may look close to this price but consider the shipping cost and whether you want a collection of seals, screws, caps and nuts that you don't need most of the time. Instructions are NOT included with this kit. The new bearings are an easy drop in. Use your favorite grease or oil when re-assembling. Its simple and gets the job done for the lowest possible cost. Free shipping in the USA! Check out our other items.Including our HubDoctor® Mavic® Freehubs Rebuild Kits The cost-saving solution for rebuilding Mavic® cassette hubs.
agosto 2, 2026

New – Crank Brothers 5050 2 and 3 and Current Pedal Rebuild Bushing Bearing Kit

New Kit - HubDoctor® Crank Brothers 5050 2 and 3 2011 to present split body type Pedal Rebuild Bushing & Bearing Kit Each HD Basic Egg Beater Pedal Rebuild Kit includes 4 high quality inner bushings and 4 high quality shielded or sealed outer ball bearings. If you prefer the open style outer bearings just pop the seals off. All the other parts can be re-used if your pedals are complete and undamaged. Other kits may look close to this price but consider the shipping cost and whether you want a collection of seals, screws, caps and nuts that you don't need most of the time. Instructions are NOT included with this kit, but I will offer this tip for removing the worn plastic bushing. A 7/16 inch drill bit makes a simple bushing extractor. By manually twisting the drill into the bushing you can then easily pull it out like a cork. The new bushings and ball bearing are an easy drop in. Use your favorite grease or oil when re-assembling. Its simple and gets the job done for the lowest possible cost. Free shipping in the USA! Check out our other items.Including our HubDoctor® Mavic® Freehubs Rebuild Kits The cost-saving solution for rebuilding Mavic® cassette hubs.
julio 26, 2026

BULLSEYE 6001-2RS (4 Qty.) HYBRID CERAMICABEC5 BALLBEARING KIT 4 PIECES

BULLSEYE 6001-2RS (12X28X8MM, 4 Qty.) HYBRID CERAMICABEC5 BALL BEARING KIT 4 PIECESFits all Bullseye hubs (4) Qty. top quality (ABEC 5) hybrid ceramic sealed ball bearing. Beautifully ground and polished chrome steel races. Dual rubber seals provide a light no drag fit on the inner race. Black ceramic Si3N4 G5 grade balls provide the best wear resistance and lowest rolling resistance of hybrid style bearings. They are lubricated with synthetic oil for low rolling resistance. Perfect for bicycle hubs, or any place a conventional version is used. Combined shipping on international orders but please inform us as soon as you win an item that you are planning to bid on or purchase multiple items. We will credit your invoice to reflect the combined shipping. Description: * Item: Double Sealed Ball Bearings * Type: Deep groove radial ball bearings * Material: Chrome Steel Races * Balls: Si3N4 Ceramic G5 (Silicon Nitride) Check out our other items, Including our HubDoctor® Mavic® Freehubs Rebuild Kits The cost-saving solution for rebuilding Mavic® cassette hubs.Seal color can be blue or black but the specs are the same.
julio 26, 2026

BULLSEYE 6001-2RS (4 Qty.) OEM STEEL ABEC5 BALLBEARING KIT 4 PIECES

BULLSEYE 6001-2RS (12X28X8MM, 4 Qty.) OEM STEEL ABEC5 BALL BEARING KIT 4 PIECESFits all Bullseye hubs (4) Qty. top quality (ABEC 5) steel sealed ball bearing. Beautifully ground and polished chrome steel races. Dual rubber seals provide a light no drag fit on the inner race. They are lubricated with grease. Perfect for bicycle hubs, or any place a conventional version is used. Combined shipping on international orders but please inform us as soon as you win an item that you are planning to bid on or purchase multiple items. We will credit your invoice to reflect the combined shipping. Description: * Item: Double Sealed Ball Bearings * Type: Deep groove radial ball bearings * Material: Chrome Steel Races * Balls: Steel Check out our other items, Including our HubDoctor® Mavic® Freehubs Rebuild Kits The cost-saving solution for rebuilding Mavic® cassette hubs.Seal color is black
julio 26, 2026

CROSSMAX UST 2000 V-BRAKE CERAMIC BALL BEARING FRONT & REAR WHEELS KIT

Fits Mavic MTB wheels: Crossmax UST. Including our HubDoctor® Mavic® Freehubs Rebuild Kits. Don't be dissuaded by the our affordable prices! These are quality hybrid ceramic ball bearings! Replacing your dried out or pitted wheel bearings with hybrid ceramic bearings has never been more affordable!
julio 25, 2026

EASTON EA 90SL 2013 AND UP ECHO HUBS HYBRID BALL BEARING FRONT & REAR KIT

EASTON EA 90SL 2013 AND UP ECHO HUBS HYBRID BALL BEARING FRONT & REAR KIT Kit includes size: 6901-2RS (1pcs rear wheel) 6801-2RS (1pcs rear wheel) 6801-2RS (2pcs front wheel) 6901-2RS (1 PCS freehub)Total 5 Qty. pieces! note, inner freehub bearing not included. Replacing your dried out or pitted wheel bearings with hybrid ceramic bearings has never been more affordable! Lower your rolling resistance compared to standard bearings. You will be surprised at the reduced rolling resistance. Increase your pedaling efficiency compared to standard steel bearings. What some of our recent buyers are telling us about upgrading to our ceramic bearings: I just installed my new bearings; Wow, what a difference! Excellent upgrade! Great price! Thanks HubDoctor® Excellent service, fast shipping, great price, the best ceramic bearings on Ebay! Fast Shipping, Superb Quality, Purchase with confidence from this dude!! Our ABEC 5 bearings feature chrome steel races which are harder and lower friction than stainless steel. The balls are high quality Si3N4 (silicon nitride balls grade 6) and nylon cages, filled with Shell Alvania RLQ2 grease. Rubber seals are pliable with just the right amount of preload to keep dirt out and rolling resistance low. Fits: EASTON EA90SL, EA90 SLX, EC90 AERO, WITH ECHO HUBS Free shipping in the USA! Check out our other items,Including our HubDoctor® Mavic® Freehubs Rebuild Kits The cost-saving solution for rebuilding Mavic® cassette hubs. See our other listings for the HubDoctor® Pro ceramic ball bearing freehub bushing replacement kit and our superior freehub replacement bushings! Don't be dissuaded by the our affordable prices! These are quality hybrid ceramic ball bearings! Photo show for display purposes. Actual bearings my vary slghtly in size.
julio 25, 2026

EASTON EA 90SL R4 HUBS ROAD WHEELS 4 QTY. OEM STEEL AXLE BEARING KIT

6902-2RS (1 QTY.)., 6901 2RS (3 QTY.). TOTAL 4 QTY. PREMIUM STEEL OEM BALL BEARING REBUILD KIT. Overhaul service tip: from the back side of the freehub slide the inner bearing spacer to side; tap outer bearing out of freehub; spacer falls out; remove c-clip; tap inner bearing out and reverse to reassemble it.