EVOSID SL1 Road Bike Crankset DUB 50-34T 52-36T Double Chainring 165 170mm
EVOSID SL1 Road Double Crankset — ES1204 One-Piece Chainring
SL1 crank arms paired with the EVOSID ES1204 one-piece double chainring. Comes with the matching threaded bottom bracket.
Forged Arms. One-Piece Double Ring.
A two-ring road crankset with no separately bolted inner and outer rings — just one rigid chainring part direct-mounted to forged crank arms, for clean, predictable front shifting.
Spindle
DUB 28.99mm
SRAM DUB standard
Crank Length
165 / 170mm
Choose from the drop-down
Chainring
50-34T / 52-36T
One-piece double, 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.
EVOSID ES1204 One-Piece Double Chainring
Both rings in one piece, direct-mounted to the SL1 crank arm.
One Piece of CNC 7075 Aluminum, With Shift Ramps
Both rings are CNC-machined from a single piece of 7075 aerospace-grade aluminum and finished in sand-blasted anodized black, staying rigid without the extra hardware of two separately bolted rings. Dedicated tooth profiles and chain-guide ramps on the big ring catch the chain cleanly as it climbs from the small ring, and width-optimized tooth tips reduce chain and ring wear. The factory rates the ES1204 for 8 to 12-speed drivetrains.
50-34T
The easier-spinning ratio — more manageable on long climbs and rolling terrain.
Chainring weight: 169g
52-36T
A taller top end for faster group rides and flatter routes.
Chainring weight: 170g
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 ES1204 Double 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.
A Front Derailleur Is Required
This is a double crankset, so your bike needs a front derailleur and a 2X shifting setup to move between the two rings.
Pedals Not Included
Pedals are sold separately.
