L-TWOO GRT12 Hydraulic Disc 1×12 Gravel Groupset Features and Specifications
This complete drivetrain bundle eliminates compatibility guesswork by pairing the hydraulic disc brake precision levers with a ZRACE crank, a wide-range 12-speed cassette, and a reinforced chain in a single purchase. The 1×12 drivetrain configuration covers enough gear range for loaded gravel touring and fast unloaded road riding, removing the need for a front derailleur on any GRX-compatible frame. Full 12-speed chain drive components are tolerance-matched to under 0.1 mm deviation, a specification that translates directly into quieter running and longer component life under load. ZRACE crank arms use cold-forged aluminium with a measured stiffness-to-weight ratio that supports consistent power transfer on climbs and sprints without adding unnecessary grams to your build. Order the L-TWOO GRT12 Hydraulic Disc groupset from the official store today, where gravel and GRX compatible stock is verified in-house and every bundle is packed for safe international delivery.











A***r –
Overall the items look very good. i haven’t installed the groupset yet tho. there are two bad points : the crank that i received had 3 small protruding nicks in the crankset spindle, the derailleur and the levers that i received weren’t the same that were in the pictures. the delivery was very fast
M***t –
I’ve done about 200 km so far and i’m overall very satisfied with the performance, with a few small niggles. Everything works great, i’m just not a fan of the up gear shifter, because it’s a bit out of reach from my usuall hand position while riding. Another small issue is that the rubber tops are harder than shimano’s so my hands get numb a bit faster – it happened with shimano as well, so not a biggie.
All in all, 5/5 will buy again when i have to.
M***i –
I still need to use it for long outings. But the quality-to-price ratio is excellent.
L***k –
Took a little while to arrive, but made a long journey so understandable. Everything looks good quality. Yet to fit.
AliExpress Shopper –
Good morning, I received the group intact. The gear seems to be of good quality. The only thing a bit lacking is the pinion package; it could have been of better quality. The rest is fine. I will assemble it in August and let you know how it works.