L2 RX 12-Speed Groupset Review: Premium Feel at a Budget Price

Introduction

The L2 RX is a 12-speed groupset sold at a price that sits far below what mainstream equivalents cost. Around £200 buys the complete package: shifters, front and rear derailleurs, cassette, chain, rotors and cable-actuated brake calipers with an internal hydraulic reservoir. Everything needed to get a bike moving arrives in a single order.

That price point makes the L2 RX genuinely interesting for anyone building a bike on a budget, and the shifting quality is better than the price suggests. There are also two clear compromises that matter on certain frames, and they are worth understanding before you order.

Who the L2 RX Groupset Is For

The L2 RX makes most sense for riders assembling a bike to a tight budget, or replacing a worn 12-speed drivetrain without spending mainstream-brand money. It is a natural fit for anyone who wants the full set of consumables and components in one purchase rather than sourcing shifters, cassette, chain and calipers separately.

It also suits riders who already like the Campagnolo lever layout. The shifter form is heavily inspired by that shape, so anyone coming from that style of lever will recognise the ergonomics immediately. Riders raised on conventional dual-control levers may need a few rides to settle in.

The groupset is less suited to bikes with complex internal routing, particularly at the front brake. That is covered in detail further down, but it is the single biggest factor in deciding whether this kit is a good match for a particular frame.

Shifter Shape and Ergonomics

The levers feel more premium than the price implies. The hoods use a rubber that feels like good quality, the bodies do not rattle, and the shift action carries a positive, defined click rather than a vague push. On a roughly £200 groupset, that is above expectations.

The shape is a deliberate nod to Campagnolo, which makes it its own design rather than a copy of anything else. Whether that works for you is largely personal preference, but the ergonomic details are thoughtful. The top of the lever body has a pronounced bump, which makes it hard to slide forward off the front when you hit rough tarmac, and the thumb buttons sit naturally under the hand when you are seated on the hoods.

Gear cable comes pre-fitted into the shifter, which saves a step during installation and keeps the assembly closed until you are ready to route it.

Main Strengths: Shifting Speed and Lever Feel

Out on the road, the L2 RX shifts quickly and cleanly. The rear derailleur indexed perfectly straight out of its plastic wrapping, with no adjustment needed to get accurate shifts across the cassette.

The front derailleur felt noticeably sticky in the stand, with more resistance in the system than a comparable groupset, but that resistance largely disappears once you are riding. It offers several trim positions, and the cable needed a small adjustment to place those trim positions exactly where they should sit, which is normal for a fresh installation.

One feature stands out: a single push of the right-hand paddle can drop two gears at once. That makes rapid acceleration and steep, sudden ramps easier to manage, and it is a capability the Sensah Empire Pro does not offer, since that groupset shifts one gear per push. The trade-off is that the lever needs a light touch. Push a little too firmly and you will take two gears when you only wanted one, which takes a few rides to calibrate.

Braking Performance From the Included ZRace BR005 Calipers

The package includes ZRace BR005 calipers, a fairly recent cable-actuated design with a hydraulic reservoir inside the body. They are positioned as a meaningful improvement over the earlier versions of the same caliper, and they arrived with gold-finished brake pads.

Stock pads on this style of caliper are commonly swapped for Shimano or another compatible pad to lift performance, but the fairest way to judge the package is exactly as it ships. Judged that way, the braking is strong. The bite is pronounced, and it holds up in wet conditions better than the JuneTech F1 Taiwanese caliper used previously. The rear caliper performed without complaint.

Things to Consider Before Buying

The front brake is the main concern, and it is a routing problem rather than a fault in the caliper itself. After a single brake application, the front cable would not return, leaving the front wheel dragging slightly under constant brake pressure. The rear caliper was unaffected.

The cause is internal routing. The cable has to travel inside the handlebar, through the head tube, into the fork and back out to the caliper, which introduces several tight bends. The caliper needs more cable travel to operate than the previous one did, so the resistance in those bends is enough to stop the cable returning. Compressionless brake housing would likely help, but it is stiff and does not bend easily, so it may not be practical to thread through this particular handlebar and fork. On a frame with simpler routing this may not be an issue at all.

The second consideration is lever reach in the drops. The downshift button cannot be reached from the drops at all. With a Campagnolo-style layout, that button is normally within reach while riding low, which matters when you want to shift to a harder gear at speed. On these levers it demands unusually long thumbs. From the hoods, the thumb buttons are easy and comfortable to use.

Weight is worth noting as well. The shifters and derailleurs came in at 744 g with cables left in place, against 708 g for the Sensah Empire Pro set. That is close enough to be a wash in practice, especially since the cables account for a few grams of the difference.

There is also only one way to route the gear cable into the shifter, on the inside of the handlebar. The Sensah Empire Pro offers a second option around the outside, which produces a smoother curve and can shift better on bars with internal routing. On the L2 RX, the cable has to take the tighter inside path. Cable length was still adequate, so the routing works, it is simply less flexible.

Buying Advice

The L2 RX is easy to recommend on shifting feel alone. The levers feel far better than the price suggests, the rear shifting is accurate without fettling, the two-gear downshift is genuinely useful, and the braking is strong in wet weather. If your frame has straightforward or external cable routing, most of the drawbacks described here simply do not apply.

Before ordering, inspect how your front brake cable runs. If it makes several tight turns inside a handlebar and fork, plan on either accepting drag or keeping your existing front caliper and running the L2 RX shifters with it. That combination still delivers the lever feel and shifting that make the groupset worthwhile.

Budget for a set of pads if you want to try a known quantity, but the supplied pads are worth testing first given how well they performed. Expect to fine-tune the front derailleur trim after a couple of rides, and give yourself a few rides to adapt to the sensitivity of the two-gear downshift.

For a build where the groupset is a large share of the total spend, the L2 RX delivers performance that feels well above its price, as long as your routing is friendly.

Conclusion

The L2 RX 12-speed groupset gets the fundamentals right. Shifting is fast and precise, the levers feel well made, the hoods are comfortable, and the included calipers brake hard and predictably in the wet. At roughly £200 for a complete 12-speed setup, that combination is difficult to argue with.

The caveats are specific rather than general. A front brake cable that refuses to return on tightly internally routed frames, and a downshift button that cannot be reached from the drops. Neither affects every rider, and both are easy to work around on the right build.

If your frame routes cables simply, this is an easy kit to fit and enjoy.