Due to effects caused by COVID-19, inventory is not available to support online retail sales. We advise you to use Renthal.com to select your Renthal products, then contact a local Renthal dealer or online retailer to make purchases. We apologize for this inconvenience and will have web sales back online as soon as we are able

Ultralight Rear

Renthal UltraLight Rear Chainwheels are CNC machined in Manchester, UK from 7075 T6 aluminum to extremely tight tolerances, 66% lighter than steel. Computer engineered and tested to ensure a precise fitment, concentricity and load dispersion with tooth profiling to provide maximum power transfer.

With Renthal's combination of high strength base material, cutting edge manufacturing methods and exceptional hardwearing surface treatments its clear to see why Renthal’s light weight all aluminum rear sprockets can be found on the rear wheels of more factory race team machines than all other competing brands combined.

For the best way to find the correct chainwheel for your motorcycle, use our Fit My Bike Parts Finder.


Useful Ultralight™ Rear Chainwheel Links
Street / Road Ultralight™ Rear Chainwheels
Accordion
Designed to keep revolving un-sprung mass to an absolute minimum and power transfer at a maximum, Renthal Ultralight™ rear chainwheels are 66% lighter than steel.
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Each Ultralight™ Rear Chainwheel that leaves Renthal's engineering facilities in the UK is individually CNC machined to the tightest possible tolerances, ensuring an accurate and reliable fit.
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High strength specially enhanced 7075 T6 aluminium alloy is used to create the perfect rear chainwheel, that is both lightweight, durable and strong.
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Ultralight™ Rear Chainwheels feature Renthal's self cleaning mud groove technology between each tooth. This prevents mud build up that traditionally leads to quicker wearing components.
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Ultralight Rear Chainwheels are available in 6 colours to help you personalise your setup. The available colours are Black, Blue, Red, Green, Orange and Silver. The anodised surface finish provides an integral coating preventing corrosion. A 15 step process is carefully carried on on each chainwheel individually.
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Renthal Ultralight™ chainwheels are used by more factory motocross and supercross teams than any other chainwheel in the world
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Name Part Number A B C D E F Prices From: Purchase
112U-520 ULTRALIGHT GROOVED, 42T 112U-520-42GESI - - - - - - Contact Distributor
112U-520 ULTRALIGHT GROOVED, 44T 112U-520-44 - - - - - - Black, Silver $93.45 Ex Tax: $93.45
112U-520 ULTRALIGHT GROOVED, 45T 112U-520-45GESI - - - - - - $93.45 Ex Tax: $93.45
112U-520 ULTRALIGHT GROOVED, 46T 112U-520-46GESI - - - - - - $93.45 Ex Tax: $93.45
112U-520 ULTRALIGHT GROOVED, 50T 112U-520-50 - - - - - - Black, Green, Silver $93.45 Ex Tax: $93.45
112U-520 ULTRALIGHT GROOVED, 54T 112U-520-54GEBK - - - - - - $97.95 Ex Tax: $97.95
121U-420 ULTRALIGHT GROOVED, 47T 121U-420-47 - - - - - - Blue, Silver $93.45 Ex Tax: $93.45
121U-428 ULTRALIGHT GROOVED, 44T 121U-428-44GPSI - - - - - - Contact Distributor
121U-428 ULTRALIGHT GROOVED, 46T 121U-428-46GPSI - - - - - - Contact Distributor
121U-428 ULTRALIGHT GROOVED, 52T 121U-428-52GPSI - - - - - - $93.45 Ex Tax: $93.45
121U-428 ULTRALIGHT GROOVED, 54T 121U-428-54GPSI - - - - - - Contact Distributor
123U-520 ULTRALIGHT GROOVED, 40T 123U-520-40GYSI - - - - - - Contact Distributor
123U-520 ULTRALIGHT GROOVED, 41T 123U-520-41GYSI - - - - - - $93.45 Ex Tax: $93.45
123U-520 ULTRALIGHT GROOVED, 43T 123U-520-43GYSI - - - - - - Contact Distributor
123U-520 ULTRALIGHT GROOVED, 44T 123U-520-44GYSI - - - - - - $93.45 Ex Tax: $93.45
123U-520 ULTRALIGHT GROOVED, 45T 123U-520-45GYSI - - - - - - Contact Distributor
123U-520 ULTRALIGHT GROOVED, 46T 123U-520-46GYSI - - - - - - Contact Distributor
123U-520 ULTRALIGHT GROOVED, 47T 123U-520-47GYSI - - - - - - $93.45 Ex Tax: $93.45
123U-520 ULTRALIGHT GROOVED, 53T 123U-520-53 - - - - - - Black, Silver $74.95 Ex Tax: $74.95
123U-520 ULTRALIGHT GROOVED, 54T 123U-520-54GYSI - - - - - - Contact Distributor
124U-520 ULTRALIGHT, 43T 124U-520-43P-HA - - - - - - $93.45 Ex Tax: $93.45
127A-520 STANDARD, 46T 127A-520-46P-HA - - - - - - Contact Distributor
127A-520 STANDARD, 47T 127A-520-47P-HA - - - - - - Contact Distributor
129--428 GROOVED, 51T 129--428-51GPSI - - - - - - $74.95 Ex Tax: $74.95
129--520 GROOVED, 43T 129--520-43GPSI - - - - - - Contact Distributor
129B-520 GROOVED, 43T 129B-520-43GPSI - - - - - - Contact Distributor
130U-520 ULTRALIGHT GROOVED, 40T 130U-520-40GBSI - - - - - - $93.45 Ex Tax: $93.45
130U-520 ULTRALIGHT GROOVED, 41T 130U-520-41GBSI - - - - - - $93.45 Ex Tax: $93.45
130U-520 ULTRALIGHT GROOVED, 42T 130U-520-42GBSI - - - - - - $93.45 Ex Tax: $93.45
130U-520 ULTRALIGHT GROOVED, 43T 130U-520-43GBSI - - - - - - $93.45 Ex Tax: $93.45
Dimensions Explained
handlebar dimensions