The ABEC-3 standard: In order to achieve ABEC standards, the bearing design must pass all tests, including noise at high speeds, minimum tolerances for inner and outer diameter, ball roundness, raceway accuracy and surface finish of both raceways and balls. The ABEC-3 standard is a good standard for use in bicycle components.

Balls: Grade 10 chrome steel balls. The balls have Grade 10 precision. 

This means that their sphericity only deviates by 10/1,000,000" from perfect sphericity, twice as much roundness as industry standards.

Slider tracks made of 52100 High Carbon Chromium steel, vacuum-processed for the highest possible purity, with hardness R-62, so they are extremely hard and tough. They are then mirror-polished to achieve ABEC-3 precision and to be free of rotational noise.

Ball retention cages: Steel retention cages.

Seals: LLB Dual-Lip low-contact silicone seals.

Balls: Grade 10 chrome steel balls. Balls have ABEC-5 standard precision: to achieve ABEC-5 standard, the bearing design must pass all tests, including noise at high speed, minimum tolerances for inner and outer diameter, ball roundness, raceway precision and surface finish of both raceways and balls.

Balls: Grade 5 chrome steel balls

The balls have Grade 5 precision. It means their sphericity deviates only 5/1,000,000" from perfect sphericity, military grade quality. Hardness R-64.

Raceways: raceways made of 52100 High Carbon Chromium steel, vacuum-processed for the highest possible purity, with hardness R-62, so they are extremely hard and resistant. They are then mirror-polished to achieve ABEC-5 precision and to be free of rotational noise.

Ball retention cages: Nylon/Graphite retention cages. Nylon with Graphite makes the cages virtually frictionless, ensuring constant lubrication.

Seals: SRS-type seals with large contact surfaces that still maintain very smooth running; held in place by snap rings that can be easily removed for cleaning and greasing the bearings.one grade 10. 

This means that their sphericity deviates by only 10/1,000,000" from perfect sphericity, twice as much roundness as industry standards.

Slider tracks made of 52100 High Carbon Chromium steel, vacuum-processed for the highest possible purity, with hardness R-62, so they are extremely hard and tough. They are then mirror-polished to achieve ABEC-3 precision and to be free of rotational noise.

Ball retention cages: Steel retention cages.

Seals: LLB Dual-Lip low-contact silicone seals.

Enduro-MAX bearings are full ball bearings, 45% higher load capacity than normal bearings.

Double labyrinth seal, Mobilux 2 grease or Rock "N" Roll.

XD-15 Ceramic Bearings and Bottom Bracket

Speed. It is ultimately why we ride. If you want to make your bike faster, more reliable and virtually maintenance free in all conditions, look to the XD-15 bottom bracket. Precision ground and USA made at the Enduro Bearings facility in California, the XD-15 combines cryogenically treated nitrogen steel races with Silicon Nitride Grade 3 ceramic balls in a proprietary process that results in the ultimate high performance bearing setup. Find out why Bike Radar reported the XD-15 “Hands down, the best bottom bracket we have ever tested”. We are so sure that you will love these bearings we offer an unlimited 2 year bearing and race warranty.

ZERØ Ceramic Bearings and Bottom Bracket

Proven time and again in World Cup race conditions, ZERØ Ceramic bearings are the ultimate race day weapon. Silicone Nitride (Si3n4) Grade 3 balls roll on Black Oxide races ground to a mirror finish after receiving Magnetite and Cryogenic treatments for hardness and longevity. ZERØ ceramic bearings feature the roundest balls you can buy without a military license and with virtually undetectable rolling resistance, they are closing in on the magic “zero” resistance wattage number. Double silicone VV seals protect the bearings regardless of weather and are lighter and more flexible than rubber, and are the lowest drag seal available. ZERØ bearings get more email and blog feedback than any other model we make citing a dramatic improvement in rolling speed.

Ceramic Hybrid (CH) ABEC-5 BB Bearings and Bottom Bracket

Ceramic bearings are not only here to stay, they are becoming the standard. When carbon fiber was first introduced, there was some doubt, but now every bicycle in the Tour de France is made of carbon fiber. This is the case for ceramic bearings, and the CH bearings are an excellent choice of entry into the technology. ABEC-5 tolerances and LLB seals with Graphite Nylon retainers are premium features that are not available on our competitor’s Ceramic Hybrid bearings at 2 or 3 times the cost. Oversized ceramic balls and cryogenic treatment of the ABEC-5 races ensure long lasting, smooth rolling bearings at great value.

Angular Contact (A/C) ABEC-5 Bearings and Bottom Bracket

For the ultimate bottom bracket bearings, and for many hubs, these are the best bearings available for speed, balance, and longevity. Because they utilize a large surface area design, the load from all the balls is shared equally at all times, spinning faster than any radial bearing where only 30% of the balls may be taking the load. A patented Enduro Bearings design, they may be serviced just as any other bearing with no special tools needed. Perfect for disc brake wheels where you need to remove all wheel play. Just remember, the RED color seal side is the loading side; don’t BLACK out! Also now available in ceramic for 2015.

In standard radial bearings, only 3 or 4 balls simultaneously adhere during loading. In ACB angular contact bearings, all balls are involved and spread the load over a larger area, reducing friction.

The balls and raceways of these bearings are manufactured from 440 C stainless steel. This material guarantees maximum corrosion (rust) resistance in very critical applications and environments. Stainless steel has a load-carrying capacity about 20% lower than the 52100 chrome steel used in many of our bearings, but has significantly higher resistance to corrosion.

FULL CERAMIC: Grade 3 silicon nitride Si3N4 balls, abec5 Si3N4 raceways, Ptfe cage. Silicone 70, Dupont Krytox grease.

XD-CERAMIC: with oversized balls for higher load capacity and less friction. 3.5 times larger than Shimano, Sram or Campagnolo. 3.5 times stronger than stainless steel.

CERAMIC HYBRID: Silicon nitride Si3N4 grade 5 balls, ABEC5 precision, nylon cage.

ZERO CERAMIC: Silicon nitride balls Si3N4 grade 3, nylon/graphite cage. 52100 High Carbon Chromium steel raceways with Cryogenic Treatment. The raceways are treated with a black oxide coating to prevent rusting, then mirror polished and finally cryogenically treated before assembly.

Cryogenic treatment brings the raceways to a temperature of minus 185°C to normalise the crystalline structure of the material. In this way, the raceways will be more resistant to the hardness of the ceramic balls and achieve maximum wear resistance. VV Dual-Lip Silicone seals.

ENDURO does not offer 'entry level' headset bearings, but starts with chrome steel and goes through a 'Black Oxide' finish to 440C stainless steel. They are designed with the largest possible balls and held in micro grooves to protect against external agents. They are 90% filled with high-pressure, water-resistant grease.

Enduro invented, designed and formulated polyurethane seals for mountain bike forks. Standard designs are plagued by contamination and rapid degradation. Enduro has created Blue polyurethane seals to solve these problems.

They keep dirt and oil out on the inside. They allow faster movement, are waterproof, last longer, and are quieter than standard types. Available for most major makes and models of forks.

Now available for 2015, the ultimate jockey wheel with Enduro XD-15 bearings. Not only 1 gram lighter each than the super light ZERØ’s, these will outlast your derailleur’s lifespan! They will spin with the same speed years from now, as fast as the day you installed them. When installed with our XD-15 bottom bracket and XD-15 wheel kit, these complete the ultimate Enduro Bearings Speed Kit for your bike, reducing the overall friction to almost nothing.

There is a whole line for safely removing and installing bearings from any cycling component. They are 100% made in the USa by Sonny's Bicycle Tools in California.