I Won’t Stop Until This Bike Is Under 5kg - Things Get Extreme!
Tom Bowers Cycling
February 26, 2026
I said I wouldn’t stop until this bike was under 5kg… so I didn’t.
Starting at 5.2kg, I cut, drilled and swapped parts until my BMC Teammachine road bike hit the target.
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Check out the AliExpress parts used
HUDUD Crank https://s.click.aliexpress.com/e/_c3BYLXlZ
SeatClamp https://www.aliexpress.com/item/1005009546283707.html
Other Items I recommend:
https://s.click.aliexpress.com/e/_EGiSiXq
AliExpress Discount Codes
Discount Codes:
$3 off on orders over $29:【IFPOQPNP】
$6 off on orders over $59:【IFPAI5BM】
$9 off on orders over $89:【IFPCCEU1】
$16 off on orders over $149:【IFPRJEDO】
$23 off on orders over $199:【IFPRZQOA】
$30 off on orders over $269:【IFPCRKYY】
$40 off on orders over $369:【IFPLWWMJ】
$50 off on orders over $469:【IFPMSZZB】
$60 off on orders over $599:【IFPAZAYB】
$70 off on orders over $699:【IFPB5SBL】
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Timestamps:
0:00 The 5kg Goal
1:09 Chopping The Drops (No Going Back)
3:37 Dura Ace 9150 Shifters
5:38 Drilling Out The Front Mech Mount
6:23 Ultra Light Seat Clamp
6:52 Crazy AliExpress Carbon Cranks
9:42 Final Weigh In
Keywords: sub 5kg bike,5kg road bike,ultra lightweight road bike,hill climb bike build,weight weenie road bike,bmc slr01 build,lightweight cycling build,marginal gains cycling,dura ace 9150,hudud crankset,carbon crank under 300g,extreme bike build,custom road bike build,shaving grams cycling,lightest road bike,road bike under 5kg,hill climb racing bike,bike weight reduction,cycling obsession build,hill climb build
Parts Mentioned
ScrewsHY Fit BMC Seatpost Clamp TeamMachine SLR01/SLR02 (2014~2017)
Created: February 27, 2026The reviewer briefly mentions swapping out the original seat clamp for a lighter one of the same design purchased from AliExpress.
AI-Summary
Pros
- Lighter weight (saved approximately 6.1 grams)
Key Points
- The original clamp weighed 18.5 grams.
- The new HY Fit clamp weighed 12.4 grams.
- The reviewer describes the weight saving as 'very modest but... real saving'.
Where to Buy
CrankHUDUD Carbon Road Bike Crankset
Created: March 06, 2026The reviewer briefly mentions the HUDUD Carbon Road Bike Crankset 277g Ultra Light 24mm Titanium Axle Easton Spider Fit Xcadey Sigeyi Power Meter but does not provide detailed analysis.
AI-Summary
Pros
- It is incredibly light, with the cranks themselves weighing just 285g in 170mm length.
Key Points
- Claimed sub-300g weight for a 170mm crankset.
- Uses a 24mm titanium axle.
- Comes with a carbon spider for a cinch-style mount.
- Cost about £200 from AliExpress.
Creator Links
HUDUD Carbon Rennrad Kurbel 277g Ultra Leicht 24mm Titan Achse Easton Interface Kompatibel Xcadey Sigeyi Powermeter - AliExpress 18