L2 RX 2x12 Groupset Review: A £200 Cable-Operated 12-Speed Build Kit

Introduction

Direct-order bike parts have reached a point where a complete 12-speed groupset can land for roughly the price of a mid-tier set of tyres. The L2 RX 2x12 bundle is a good example: shifters, both derailleurs, a cassette, a chain and a pair of brake calipers, all for around £200.

It arrives from the 318 Bike Store, a gold-rated seller with 6,361 followers and a 97.3 percent positive feedback score, which is the kind of track record that matters when you are buying components you intend to ride hard. What follows is a close look at the parts themselves, how they feel in the hand, and the trade-offs that come with the price.

Who the L2 RX 2x12 Groupset Is For

This is a kit for riders who already have a frame and a crankset, or who are refreshing an older build. Because the bundle ships without a crank, it suits anyone who is happy to keep the chainset already on the bike, as long as it is 12-speed compatible.

It also makes sense for riders who prefer cable-operated gearing and braking. There is no battery to charge, no firmware to manage, and no motor whirr at the lever. Shifting and braking are mechanical throughout, with the brake calipers using a cable-actuated hydraulic design rather than a fully hydraulic hose system.

Finally, it is aimed at buyers who accept simple packaging. Components turn up wrapped in layers of bubble wrap and bags rather than retail boxes, which is normal for this corner of the market and keeps the cost down.

Main Strengths

The bundle is at its best in the shifters and the two derailleurs. The cassette and chain do their job, but they are clearly the budget end of the kit and worth thinking about before you commit.

Shifter Feel and Control Layout

The shifters are the highlight. The lever blades use a carbon construction with a shape that will look familiar to anyone who has ridden European groupsets, and the control layout follows a well-established pattern: a small paddle tucked underneath the brake lever shifts one way, a button clicks through in the other direction, and the outer lever operates the brake.

The hood material feels well made, with a lightly textured, grippy surface where your hands sit. In use they feel slightly larger in the hand than some rival budget groupsets, which may suit riders with bigger hands or anyone who prefers a fuller hood profile. Braking and shifting are fully cable operated, so setup is straightforward and there is nothing electronic to troubleshoot.

Derailleurs and Build Quality

The front derailleur is a standard double design, nicely finished and shiny enough to pass for premium at a glance. It weighs 98 grams, and it carries an 11 marking on the back, which suggests it is the same unit used across the brand’s 11-speed groupsets. It is rated to work with the 12-speed system as well. The body is alloy with a finish that mimics carbon rather than genuine carbon fibre.

The rear derailleur is the better-looking of the two. It uses a long cage with a carbon cage plate, and the spring tension feels good in the hand. The jockey wheels spin smoothly. All the usual adjustment points are present, including high and low limit screws and a clutch screw, and a small amount of thread-locking compound has been applied to them, which is a reassuring detail at this price.

Weights and What Arrives in the Box

Everything in the bundle was weighed individually, which gives a clear picture of where the mass sits.

• Right shifter: 209 grams
• Left shifter: 212 grams
• Front derailleur: 98 grams
• Rear derailleur: 219 grams
• Cassette with lock ring: 387 grams
• Chain: 255 grams
• Brake calipers, pair: 323 grams

The cassette is a ZRACE-branded 11-34 unit. It is quite heavy, and while it looks similar to cassettes supplied with other budget groupsets, there are small differences in the machining. The 12-speed chain is also ZRACE branded and carries packing grease out of the box, and the packaging does not state a link count.

The brake calipers come from ZRACE rather than L2, which is common with these sellers, who mix and match parts from different companies. The model is the BR-005, a hydraulic caliper that is actuated by a cable, so a standard brake cable runs from the lever to the caliper. They are available separately with disc options and a range of colours and sizes; this build used black with 160mm rotors front and rear.

Things to Consider Before Buying

The two weakest links are the cassette and the chain. At 387 grams including the lock ring, the cassette is on the heavy side, and the chain arrives coated in packing grease. If you wax your chains, that grease is a nuisance to strip out, and you would be better off choosing a chain separately. The box also does not confirm how many links the chain has, so it is worth checking it covers your gearing before you start the build.

The cable-actuated hydraulic calipers need a careful setup to feel right. They are a hybrid design rather than a full hydraulic system, so the lever feel and modulation depend on getting cable routing, pad alignment and rotor clearance correct.

On design, the shifter shape is clearly inspired by existing European groupsets, and the branding typeface has echoes of a major Japanese manufacturer. That is a normal part of how components in this segment evolve, and it is worth being clear-eyed about it: you are buying a proven layout executed at a low price, not an original mechanism.

Finally, remember that the bundle contains no crank. Budget for a chainset if you do not already have a 12-speed compatible one.

Buying Advice

The strongest argument for this groupset is its split. The shifters and derailleurs feel and look considerably better than the price suggests, and those are the parts you interact with on every ride. The cassette and chain are functional but ordinary, and swapping them for lighter, better-known alternatives costs far less than the saving you made on the kit as a whole.

If you are building up a frame from scratch, or moving an older bike to 12-speed, the bundle gets you most of the way there for around £200, with a clear upgrade path on the two consumable parts. If you already own a good cassette and chain, buying the shifting components as a set and pairing them with your existing parts is likely the smarter route.

Before ordering, confirm the caliper specification: disc or no disc, rotor size, and colour, since those are all selectable options rather than fixed contents. A gold-rated seller with a long feedback history and a 97.3 percent positive score takes some of the risk out of the transaction, but as always with direct-order parts, check the listing details carefully before checkout.

Conclusion

The L2 RX 2x12 bundle delivers a credible 12-speed, cable-operated groupset for a genuinely low outlay. The shifters have a solid, well-made feel, the rear derailleur is thoughtfully finished with a carbon cage and thread-locked adjustment screws, and the whole kit weighed in at sensible numbers for the money.

Go in knowing what you are buying: simple packaging, no crank, a heavy cassette, a greasy chain, and a design language borrowed from established brands. Treat the shifting components as the value here, plan to upgrade the cassette and chain when it suits you, and this kit makes a lot of sense for a budget build.