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Ultralight Rear

Renthal Ultralight™ rear chainwheels are manufactured to extremely tight tolerances from  7075 T6 aluminium alloy which is 66% lighter than steel, yet incredibly durable. Their advanced tooth profile, concentricity and accuracy of fit provide maximum power transfer and long-life.

Renthal's combination of a high strength base material and exceptionally hardwearing surface result in significantly increased chainwheel life over other brands.

For the best way to find the correct Renthal UltraLight Rear Chainwheel for your model, use our Fit My Bike feature.

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 Tanium. 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 - - - - - - $71.95 Ex Tax: $71.95
112U-520 ULTRALIGHT GROOVED, 44T 112U-520-44 - - - - - - Black, Silver $72.95 Ex Tax: $72.95
112U-520 ULTRALIGHT GROOVED, 45T 112U-520-45GESI - - - - - - $72.95 Ex Tax: $72.95
112U-520 ULTRALIGHT GROOVED, 46T 112U-520-46GESI - - - - - - $72.95 Ex Tax: $72.95
112U-520 ULTRALIGHT GROOVED, 50T 112U-520-50 - - - - - - Black, Green, Silver $72.95 Ex Tax: $72.95
112U-520 ULTRALIGHT GROOVED, 54T 112U-520-54GEBK - - - - - - $72.95 Ex Tax: $72.95
121U-420 ULTRALIGHT GROOVED, 47T 121U-420-47 - - - - - - Blue, Silver $72.95 Ex Tax: $72.95
121U-428 ULTRALIGHT GROOVED, 44T 121U-428-44GPSI - - - - - - $72.95 Ex Tax: $72.95
121U-428 ULTRALIGHT GROOVED, 46T 121U-428-46GPSI - - - - - - $69.95 Ex Tax: $69.95
121U-428 ULTRALIGHT GROOVED, 52T 121U-428-52GPSI - - - - - - $72.95 Ex Tax: $72.95
121U-428 ULTRALIGHT GROOVED, 54T 121U-428-54GPSI - - - - - - $72.95 Ex Tax: $72.95
123U-520 ULTRALIGHT GROOVED, 40T 123U-520-40GYSI - - - - - - Contact Distributor
123U-520 ULTRALIGHT GROOVED, 41T 123U-520-41GYSI - - - - - - $72.95 Ex Tax: $72.95
123U-520 ULTRALIGHT GROOVED, 43T 123U-520-43GYSI - - - - - - $72.95 Ex Tax: $72.95
123U-520 ULTRALIGHT GROOVED, 44T 123U-520-44GYSI - - - - - - $72.95 Ex Tax: $72.95
123U-520 ULTRALIGHT GROOVED, 45T 123U-520-45GYSI - - - - - - $72.95 Ex Tax: $72.95
123U-520 ULTRALIGHT GROOVED, 46T 123U-520-46GYSI - - - - - - Contact Distributor
123U-520 ULTRALIGHT GROOVED, 47T 123U-520-47GYSI - - - - - - $72.95 Ex Tax: $72.95
123U-520 ULTRALIGHT GROOVED, 53T 123U-520-53 - - - - - - Black, Silver $72.95 Ex Tax: $72.95
123U-520 ULTRALIGHT GROOVED, 54T 123U-520-54GYSI - - - - - - $72.95 Ex Tax: $72.95
124U-520 ULTRALIGHT, 43T 124U-520-43P-HA - - - - - - Contact Distributor
127A-520 STANDARD, 46T 127A-520-46P-HA - - - - - - $72.95 Ex Tax: $72.95
127A-520 STANDARD, 47T 127A-520-47P-HA - - - - - - Contact Distributor
129--428 GROOVED, 51T 129--428-51GPSI - - - - - - $72.95 Ex Tax: $72.95
129--520 GROOVED, 43T 129--520-43GPSI - - - - - - Contact Distributor
129B-520 GROOVED, 43T 129B-520-43GPSI - - - - - - $72.95 Ex Tax: $72.95
130U-520 ULTRALIGHT GROOVED, 40T 130U-520-40GBSI - - - - - - $72.95 Ex Tax: $72.95
130U-520 ULTRALIGHT GROOVED, 41T 130U-520-41GBSI - - - - - - $72.95 Ex Tax: $72.95
130U-520 ULTRALIGHT GROOVED, 42T 130U-520-42GBSI - - - - - - $72.95 Ex Tax: $72.95
130U-520 ULTRALIGHT GROOVED, 43T 130U-520-43GBSI - - - - - - $72.95 Ex Tax: $72.95
Dimensions Explained
handlebar dimensions