The quick call: pick the system that matches your ride life
Go 105 mechanical if you value no-battery dependability, easy on-the-spot adjustments, and maximum “any shop can fix it” serviceability—especially on trips. Go SRAM Rival eTap AXS if you want wireless shifting with button-based consistency, a cleaner install (no shift cables to route), and a modern setup you can fine-tune with the AXS app.
From the Rival AXS side, the big real-world wins are the wireless install and setup (the rear derailleur is literally a one-bolt install plus an app step), plus consistent shifting that doesn’t drift as housing beds in. Rival AXS also brings ergonomic lever/hood shaping aimed at fitting a wider range of hands, and hydraulic braking feel that stays consistent in wet or dry conditions (per the Rival E1 AXS shift/brake system notes).
The trade is responsibility: electronic shifting means a charging routine and a little more “systems thinking” for travel. Mechanical means more periodic cable/housing attention over time—stretch, contamination, and adjustment—but it’s also the simplest to diagnose on the shoulder of the road.
Bottom line: if your priority is long-term, low-drama reliability with minimal planning, choose 105 mechanical. If your priority is clean wireless ergonomics and repeatable shifting feel ride after ride, choose Rival eTap AXS—and treat batteries like you treat tires: part of the pre-ride check.
What changes on the road: shifting feel, braking, and noise
Shifting under load: Wireless button shifting tends to feel the same whether you’re fresh or cross-eyed at mile 80—Rival AXS is built around that consistent action. Mechanical 105 can shift brilliantly, but cable tension and housing condition can change the feel over time, which is why it may need occasional tweaks.
Braking control: The Rival E1 AXS shift/brake system highlights easy braking from the hoods and consistent feel in wet or dry. If you spend a lot of time on the hoods in sketchy weather, that “same feel every time” matters.
Noise & rub management: On the AXS 2x side, SRAM’s front derailleur uses a Yaw-style movement intended to run trim-free to help prevent chain rub across the cassette (Force is called out specifically, and Rival’s front derailleur is also described as using Yaw tech). Mechanical setups often rely on careful adjustment and occasional trimming habits, depending on the system.
Ergonomics & cockpit options: Rival AXS supports add-ons like MultiClics—remote shift buttons you can mount on drop bars or aero base bars—plus replaceable lever hoods if you want a fresh feel. If you’re building an all-road cockpit with multiple hand positions, that remote-shift option is a legit quality-of-life upgrade.
- Choose wireless for consistent button shifts, clean routing, and app-assisted setup.
- Choose mechanical for straightforward feel, no charging, and easy roadside tuning.
Compatibility & upgrade paths: the stuff that bites later
Speed count: Rival AXS in this lineup is clearly 12-speed (the rear derailleur is listed as 12-speed and pairs with 12-speed cassettes). Many 105 mechanical builds are 11-speed. That matters for wheel swaps, trainer setups, and parts mixing—11-speed and 12-speed aren’t a plug-and-play mashup.
Cassette range expectations: The Rival AXS rear derailleur is stated to work with 12-speed cassettes from 10-28T to 10-36T. If your current wheels or trainer can’t accept a 10-tooth-start cassette, you may be looking at a driver/freehub change or different wheel choice. (If you’re unsure what your wheel uses, that’s a five-minute check with a Gearhead® Expert.)
Chainring/cassette “equivalence”: SRAM’s AXS 2x ecosystem is designed around X-Range chainring combos (the Force front derailleur calls out 33/46, 35/48, 37/50). That’s a different gearing philosophy than many traditional mechanical road doubles. It’s not better or worse—it just changes how your steps between gears feel.
Upgrade path reality: If you start with 105 mechanical, moving to wireless later usually means replacing a lot at once (levers, derailleurs, and more). If you start with Rival AXS, you’re already in the AXS battery/app ecosystem and can add cockpit options like MultiClics or replace touch points like lever hoods without redoing the whole bike.
- Check your current wheel/trainer driver compatibility for 12-speed AXS cassettes.
- Decide if you want traditional 11-speed mechanical simplicity or 12-speed wireless ecosystem flexibility.
- Budget for the “hidden” parts: cassettes, chains, and potential wheel driver changes.
Make the call with Backcountry in your corner
Choosing between cable-driven 105 and wireless Rival AXS is less about “good vs better” and more about how you actually ride: weekend hammerfests, all-road exploring, travel, trainer season, or a little of everything. The right pick is the one that won’t bug you at mile 40 or on day three of a trip.
Backcountry is built for that kind of decision—gear-forward, no fluff. If you’re juggling wheel compatibility, thinking about future upgrades, or just trying to decide whether you want to charge batteries or tune cables, our Gearhead® Expert crew can help you sort it fast.
Bring your current setup details (wheel model, cassette, 1x vs 2x goals, and where you ride), and we’ll help you land on the drivetrain that fits your priorities—clean and wireless, or simple and serviceable.
