EVOSID SL1 1x Road Racing Crankset DUB Closed Chainring 46T 48T 50T 165 170mm
EVOSID SL1 1X Road Racing Crankset — Closed Spider-Web Chainring
SL1 crank arms paired with an EVOSID closed spider-web single chainring. Comes with the matching threaded bottom bracket.
Forged Arms. Closed Single Ring.
A 1X crankset for fast road riding and racing — the closed chainring face covers the spider for a clean, disc-like profile, and the big-ring gearing gives a single-chainring road bike the top-end speed it needs.
Spindle
DUB 28.99mm
SRAM DUB standard
Crank Length
165 / 170mm
Choose from the drop-down
Chainring
46T / 48T / 50T
Closed face, 7075 alloy
Q-Factor
146mm
Tread width
EVOSID SL1 Forged Crank Arms
Forged, CNC-finished arms on a SRAM DUB-standard spindle.
Forged and CNC-Machined, Not Just Machined from Stock
The SL1 arms start from a forged 6061-T6 aluminum blank rather than bar stock, giving the crank arm a stronger internal grain structure for high stiffness and crack resistance under hard pedaling — the factory quotes roughly 15% lower weight and 20% higher stiffness.
165mm arms
609g
170mm arms
660g
Gap Adjustment Ring
A preload adjustment ring on the non-drive arm takes up the play between the crank and the bottom bracket, then locks in place with a small pinch bolt — so the crankset spins freely without side-to-side movement.
DUB 28.99mm Spindle
The spindle follows the SRAM DUB standard, so it works with DUB bottom brackets as well as the EVOSID threaded bottom bracket offered below.
Closed Spider-Web Chainring
A closed single ring for fast 1X road builds.
Spider-Web Pattern, Milled for a Reason
The chainring face is CNC-milled into a radiating spider-web pattern rather than left as a flat disc — removing material where it isn't structurally needed cuts weight, while the ribbed pattern reinforces the areas that carry pedaling load. The closed-disc profile also keeps loose clothing and cables away from the chainring.
Fewer Bolts, Faster Swaps
Just 3 T25 Torx bolts hold the 7075 aluminum chainring to the crank arm — the factory quotes roughly 40% faster installation than a traditional multi-bolt design.
46T
The most manageable gearing — a good fit for rolling terrain and climbs.
48T
A middle ground between climbing and speed.
50T
A taller top end for flat roads and faster riding.
EVOSID Threaded Bottom Bracket Included
Every crankset ships with the matching bottom bracket and its spacers, ready to install.
EVOSID BC1.37"×24T Threaded Bottom Bracket
A BSA (English) threaded bottom bracket for DUB spindles. Overall width is 90mm and it fits bottom bracket shells from 68mm to 73mm wide, with spacers included (two 2.6mm, one 3mm and one 4.5mm) to take up the difference. Threading directly into the shell avoids the creaking press-fit bottom brackets are known for.
Technical Details
What's in the Box
×1 pair
EVOSID SL1 Crank Arms (length as selected)
×1
EVOSID Closed Chainring (fitted, as selected)
×1
EVOSID BC1.37"×24T Bottom Bracket + Spacers
Buyer Notes
Check Your Bottom Bracket Shell
The included bottom bracket fits BSA (English) threaded shells 68-73mm wide. It is not a press-fit design. If your frame uses a press-fit or other shell standard, this bottom bracket won't fit, so you'll need a DUB bottom bracket made for your frame.
Built for 1X (Single-Chainring) Drivetrains
This is a single-chainring crankset, designed to run without a front derailleur.
Pedals Not Included
Pedals are sold separately.
