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The Best Lightweight Road Bike Parts & Components: A Weight Weenies Guide

If you’re ready to put your bike on a diet, here’s the weight weenie's guide to some of the lightest wheels, cranks, cassettes, components, and other upgrades.

Written by: Bruce Lin

Published on:

Posted in:Road

Tour de France King of the Mountains lightweight road bike components and partsNot everyone can be King of the Mountains, but anyone can build a KOM worthy bike. Photo: ASO/Pauline Ballet.

When browsing road bikes, a devilish little weight weenie often appears on my shoulder and whispers, “How much does it weigh?” Weight isn’t the most important thing for average riders, but bike geeks like me always obsess over every gram. While I could lose a few pounds myself, it’s always fun to optimize your gear.

Watching the pros attack the Tour de France’s brutal climbs on featherweight bikes inspired me to look at some pro-level components that can slim down my own bike. If you’re ready to put your bike on a diet, here’s a guide to some of the lightest upgrades you’ll find at The Pro’s Closet.


Lightweight carbon road bike wheels for saleWheels are the best place to drop grams. They make the biggest difference in your climbing performance. That’s why top Tour de France teams swap to lighter wheels for tough climbing stages.

Carbon wheels are the ideal choice because they can be made much lighter than aluminum wheels while maintaining stiffness. Wheels under 1,500 grams are great, and wheels under 1,400 grams are exceptional. If you want to go all-out, few can match the Lightweight Meilenstein Tubulars at 1,180 grams.

Mavic Ksyrium Pro Carbon SL - $1,259.99, 1,445g
Reynolds Attack - $1,349.99, 1,470g
Bontrager Aeolus XXX2 - $1,799.99, 1,360g
ENVE SES 2.2 - $2,299.99, 1,360g
Lightweight Meilenstein Tubular - $4,199.99, 1,180g

Compare to an aluminum HED Belgium Plus wheelset - $1,099.99, 1,700g



Lightweight road bike cranksets and cassettes for sale Cranksets

The crankset is the heaviest drivetrain component. Swapping to carbon cranks like the Easton EC90SL or THM Clavicula can shed 100-200 grams compared to standard aluminum cranks. If you prefer aluminum, the Cannondale Hollowgram cranks are the most competitive.

Easton EC90 SL - $219.99, 344g
Cannondale Hollowgram SiSl2 - $436.99, 380g
THM Clavicula SE Road - $734.99, 311g

Compare to an aluminum Dura-Ace R9100 crankset - $341.99, 491g

If you already have carbon SRAM Red or Force cranks, don’t be fooled! They are only 20-30 grams heavier than Easton and THM.



After cranks, the cassette is the easiest place to trim some extra fat. SRAM XG cassettes are machined out of a single piece of steel to create a lightweight hollow dome structure. Shimano Dura-Ace cassettes cut weight by using five titanium cogs mounted to a carbon fiber carrier.

SRAM Red XG-1190 - $317.99, 195g (11-30t)
SRAM Red XG-1290 - $349.99, 212g (10-33t)
Shimano Dura-Ace R9100 - $292.99, 211g (11-30t)

Compare to an all steel Ultegra R8000 cassette - $74.99, 269g


Parts and Accessories

Lightweight road bike carbon handlebars, seatposts, saddles, bottle cages, and tubes for saleCarbon handlebars

Carbon handlebars can save over 100 grams compared to an alloy bar. As a bonus, they also provide vibration damping for extra comfort.

ENVE Standard Road - $349.99, 205g
ENVE Compact Road - $349.99, 205g
3T Ergosum Team - $125.99, 204g

Compare to an aluminum FSA Gossamer handlebar - $62.00, 310g



Carbon seatposts are 80-100 grams lighter than aluminum posts, and like handlebars, they can also afford some comfort through vibration dampening. The heavily machined aluminum Thomson Masterpiece is one of the few exceptions.

Zipp SL Speed - $159.99, 175g
ENVE Twin Bolt - $274.99, 205g
Thomson Masterpiece - $69.99, 195g

Compare to an aluminum Thomson Elite seatpost - $51.99, 282g



A saddle with carbon rails will be lighter than one with standard alloy or steel rails. Make sure your seatpost is compatible with thicker 7x9mm carbon rails though.

Fizik Antares VS Evo R1 - $199.00, 179g
Fizik Vento Argo R1 - $224.99, 179g
Fizik Antares VS Evo R1 Adaptive - $299.00, 174g

Compare to an alloy rail Fizik Vento Argo R3 - $149.99, 213g


Bottle cages

Bottle cages are an easy place to cut a few grams. The glass fiber Tacx Ciro won’t break the bank, but if you want something blingy, carbon Arundel and titanium Silca cages are popular options.

Tacx Ciro - $24.99, 29g
Arundel Mandible - $78.95, 28g
Silca Sicuro - $70.00, 30g

Compare to an aluminum Lezyne Power bottle cage - $9.99, 66g


Inner tubes

You should always carry a spare tube but it doesn’t need to weigh you down. New thermoplastic polyurethane tubes are super light and take up less space.

Tubolito Road S-Tubo - $39.99, 34g
Schwalbe Aerothan - $35.88, 50g

Compare to a Continental tube - $5.24, 105g



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