EXTRALITE rear hub HyperBoost3 R | Enduro Bearings stainless steel bearing SRAM XD 48 teeth 12x148 mm BOOST
Stable, precise and incredibly light. With the HyperBoost3 R rear wheel hub, the Italian lightweight construction specialists are raising the bar even higher.
At 148 grams, the HyperBoost3 R is one of the lightest hubs money can currently buy. Elaborate computer simulations, countless prototypes and a long test phase under the toughest conditions guarantee you a long service life.
In the current version, the Italians have turned the weight screw again and set the new benchmark for hubs at 148g. Despite its low weight, the hub is approved for enduro use with a good driving style. The freewheel mechanism has also been optimized. The toothed disc in the hub body has lost 20% of its weight and sits in a newly developed tooth system. In addition to improved engagement speed when accelerating, this also reduces resistance when rolling. The service life and wear have also been optimized by these changes compared to the predecessor. If you prefer a harder pace, you can install a larger 6903 2RS bearing on the disc side. The weight of the hub then increases by 8 grams, but the hub is much more durable and has a higher load capacity.
As usual from Extralite, the hub is perfectly finished. Minimal tolerances and high-quality materials leave no doubt as to the quality and stability of this work of art. The black, hard-anodized hub rotates on two 6803 2RS deep groove ball bearings around the multiple butted axle . An O-ring on each side provides additional protection against water and dirt. For a long service life of your bearings, you can use the Micro-Turner to perfectly adjust the bearing play at any time.
In addition to the organic oversized shape, the modern concept of the hub also includes the spoke flanges, which are intended for straight pull spokes. The straight spokes result in a straighter power flow and the elimination of the curved spoke head means there is one less potential weak point in the wheel.
The spur gear has 48 teeth. This results in a maximum idle travel of 7.5° when accelerating.
stainless steel bearings
Best corrosion resistance and the optimal choice if the wheel is often used in adverse conditions.
We would be happy to make you an offer for a complete custom wheelset with rims and spokes of your choice. Please email us at [email protected] !
intended use : Cross Country, Marathon, Enduro
Material: aluminum 7075TXX, steel
Axle standard : 12x148 mm thru axle type (BOOST / Outboard)
Number of holes: 24 or 28
Brake disc mount: 6-hole (IS2000)
Freewheel bearing : 2x 6803 2RS deep groove ball bearings, Enduro Stainless Bearings 440C
bearing hub body: 1x 6803 2RS (disc side), 1x 6903 2RS deep groove ball bearing (middle), Enduro Stainless Bearings 440C
Seal: labyrinth rubber seals, O-ring seal
Spoke type: Straightpull (straight)
Features: Bearing option 6903 2RS "Heavy Duty" on disc side
Spoke tension max.: 1275N (Disc Side), 1275N (Drive Side)
maximum system weight: kA
Colour: black with laser logo
Weight according to the manufacturer: 148g
Weight weighed: 151g
Scope of delivery: 1x EXTRALITE rear hub HyperBoost3 R | Enduro Bearings stainless steel bearing SRAM XD 48 teeth 12x148 mm BOOST