47:19. Over two minutes faster than Danielson’s 49:24 from 2002, which was later stripped for doping. This climb has a long history of top pros coming over fresh off the Tour — careers were made here. I’d wanted to do it for years and finally showed up this August, first time on the mountain, with a full-time job and a 10.8 lb bike.
7.6 miles, 4,700 feet. Averages 12%, goes to 18% for long stretches, finishes with a 22% wall. Here’s everything on the bike.
Total Weight
| Category | Weight |
|---|---|
| Cockpit | 321 g |
| Drivetrain | 1,554 g |
| Brakes | 379 g |
| Wheels | 872 g |
| Frame Module | 1,068 g |
| Contact Points | 749 g |
| Total | ~4,900 g (10.8 lbs) |
Cockpit — 321 g
| Part | Weight |
|---|---|
| Darimo IX2 carbon stem, 110mm | 122 g |
| Darimo Ellipse carbon bar, 40cm | 89 g |
| ALPITUDE computer mount | 14 g |
| Darimo T1 Loop carbon post, 230mm | 82 g |
| Mcfk Sub5 UD carbon seat clamp | 6 g |
| Schmolke carbon shifter clamps | 8 g |
Darimo IX2 stem, 122g. Ellipse bar, flat-top, 40cm, 89g. The T1 Loop seatpost gets to 82g because it uses Dyneema loops instead of a metal clamp head — two loops around the saddle rails, tighten against barrel nuts. Sounds like something that shouldn’t work. It does. Schmolke shifter clamps are carbon replacements for the stock Shimano aluminum bands. 7g. That’s it.
Drivetrain — 1,554 g
| Part | Weight |
|---|---|
| THM Clavicula SE Power crank | 337 g |
| Hope chainring, 34t | 39 g |
| CARBON-TI chainring bolts | 7 g |
| CeramicSpeed BSA30 bottom bracket | 85 g |
| CeramicSpeed OSPW cage | 20 g |
| ZTTO SLR Gen 3 cassette, 12s 34t | 160 g |
| KMC X12 Ti-N gold chain, 12s | 278 g |
| Dura-Ace R9200 Di2 levers | 353 g |
| Dura-Ace R9200 rear derailleur | 202 g |
| Di2 battery | 52 g |
| EW-SD300 wire | 21 g |
THM Clavicula SE Power, 337g with a power meter. I’ve had creak issues with the compression system on training builds — bad enough that I’ve pulled it mid-ride. But for one day on a dry road I’ll take the risk. 34/34 gearing. The ZTTO cassette will probably creak by next week. Every one I’ve owned has. Today it doesn’t matter.
Brakes — 379 g
| Part | Weight |
|---|---|
| Lewis BB2-Ti flat mount calipers + hoses | 208 g |
| Galfer 160mm rotor, front | 77 g |
| Galfer 140mm rotor, rear | 94 g |
Lewis BB2-Ti calipers, 76g each, 208g with hoses. Dura-Ace runs 97g per caliper. The feel is a step down from Shimano — you notice it on anything fast and steep. Washington goes one direction, so I don’t care. Galfer Wave rotors.
Wheels — 872 g
| Part | Weight |
|---|---|
| Light Bicycle AR25 carbon rims x2 | 530 g |
| Carbon spokes | 100.8 g |
| Sapim gold nipples | 11.2 g |
| HyperSmart3 front hub | 67.1 g |
| HyperSmart3 rear hub | 150.3 g |
| Alu rotor bolts | 13 g |
Light Bicycle AR25 rims, HyperSmart3 hubs, carbon spokes with Sapim gold nipples. I snapped three AliExpress carbon spokes on a previous build so these are name-brand. 872g total.
Frame Module — 1,068 g
| Part | Weight |
|---|---|
| S-Works Aethos frame + fork | 944 g |
| Specialized headset bearings | 48 g |
| Flat mount adapters | 21 g |
| Direct mount hanger | 10 g |
| OVERFAST ultralight thru axles | 30 g |
| Expander plug | 11 g |
| 3D printed top cap | 2 g |
| 3D printed bar ends | 2 g |
694g frame, 250g fork. OVERFAST carbon thru axles for three years and around 10,000 miles. Still on. 15g over stock. 3D printed top cap and bar ends, 4g combined. Yes I weighed them.
Contact Points — 749 g
| Part | Weight |
|---|---|
| Xpedo SONIK pedals | 188 g |
| Gelu K-3 carbon saddle | 45 g |
| Michelin Power Cup tires x2 | 440 g |
| Ridenow TPU tubes | 38 g |
| Deda Traforato bar tape | 26 g |
| VOXOM FH12 carbon cage | 12 g |
Xpedo SONIK pedals, 188g, roughly 40g under Dura-Ace. Gelu K-3 saddle, 45g, an AliExpress carbon clone I’ve been riding for a few months with no problems so far. Michelin Power Cup — heavier than some options but I’ve raced on them before and didn’t want to think about tires. Ridenow TPU tubes, 19g each.
Disclosure: I purchased all components with my own money unless otherwise noted. No affiliate links.
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