2022 KTM RC 125 Review: A Pocket-Sized Supersport with Grand Prix Ambitions

Introduction

The 2022 KTM RC 125 is a motorcycle that refuses to be pigeonholed as "just a beginner bike." With its Grand Prix-inspired design, razor-sharp handling, and tech-forward features, this pint-sized supersport punches far above its 125cc weight class. Designed for riders who crave the adrenaline of track-day aggression but need a machine that’s forgiving enough for daily commutes, the RC 125 is a masterclass in balancing performance and practicality. Let’s dive into what makes this Austrian pocket rocket a standout in the hypercompetitive lightweight sportbike segment.

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Design: Grand Prix Flair Meets Functional Aggression

KTM’s "READY TO RACE" ethos is etched into every angle of the RC 125’s redesigned bodywork. The 2022 model ditches the previous generation’s bulky aesthetics for a sleeker, computational fluid dynamics-optimized silhouette. The result? A bike that looks like it’s doing 200 km/h (124 mph) while standing still.

The steel trellis frame isn’t just a structural element—it’s a design statement. Left partially exposed by the abbreviated tail section, the scarlet-painted framework gives the RC 125 a mechanical honesty that’s rare in this segment. Riders will appreciate the two-tone Orange/Black and White/Orange color schemes, which mirror KTM’s MotoGP livery without feeling derivative.

Ergonomics walk a tightrope between sporty commitment and real-world usability. The 824 mm (32.4-inch) seat height might intimidate shorter riders, but the narrow tank cutouts and recontoured knee recesses make it easier to plant feet firmly at stops. The real surprise is the wind protection—that angular front fairing and 5 mm taller screen actually make highway stints viable, deflecting buffeting better than some middleweight sportbikes.

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Performance: Small Bore, Big Personality

Don’t let the 125cc displacement fool you—this single-cylinder mill is a revelation. The liquid-cooled DOHC engine churns out 15 HP (11 kW) at 10,000 RPM and 12 Nm (8.9 lb-ft) of torque at 8,000 RPM. While those numbers seem modest, the RC 125’s featherweight 147 kg (324 lbs) dry weight creates a power-to-weight ratio that’ll have you laughing maniacally through every corner exit.

The magic lies in how KTM’s engineers have tuned this engine. From 6,000 RPM upward, the Bosch fuel-injected powerplant comes alive with a metallic snarl that’s pure Moto3 soundtrack. The six-speed gearbox is a tactile delight—short throws, positive engagement, and ratios perfectly spaced for both urban cut-and-thrust and winding backroads. Cruising at 90 km/h (56 mph) in sixth sees the tacho hovering at a relaxed 7,500 RPM, while the claimed 2.42 L/100 km (97 mpg) fuel economy means you’ll be stopping for adrenaline refills long before fuel.

Where the RC 125 truly shines is chassis dynamics. The WP APEX 43 mm USD forks and monoshock rear suspension—developed specifically for this model—offer damping sophistication that belies the bike’s price point. Over broken pavement, the setup remains composed, but flick it into a hairpin and the front end responds with telepathic immediacy. Pair this with the ByBre braking system (320 mm front disc with radial caliper) and Bosch ABS, and you’ve got a bike that inspires confidence whether you’re trail-braking into Turn 1 or dodging taxis downtown.

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Electronics & Features: Big-Bike Tech in a Small Package

The RC 125’s TFT dashboard is a generational leap over competitors’ LCD units. This 5-inch display automatically adjusts brightness, offers Bluetooth connectivity via KTM MY RIDE, and serves up a color-coded gear indicator that’s crucial when chasing the 11,500 RPM redline. While the 125 doesn’t get the 390’s cornering ABS or traction control, the non-switchable ABS is impeccably tuned—intervening just late enough to allow some rear-wheel fun without ever feeling intrusive.

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Competition: How the RC 125 Stacks Up

The 125cc sportbike arena is fiercely contested. Here’s how the KTM battles its rivals:

Yamaha YZF-R125

The Japanese stalwart matches the KTM’s 15 HP output but does it with a slightly more peaky powerband. While the Yamaha’s DeltaBox frame is sublime, its conventional forks and basic LCD dash feel dated next to the RC’s WP suspension and TFT tech. The R125 also carries 7 kg (15 lbs) more—a noticeable difference when pushing hard.

Honda CBR125R

Honda’s offering plays the reliability card with proven air-cooled simplicity. However, its 12.9 HP output and upright ergonomics cater more to commuters than corner addicts. The KTM outguns it in both spec sheet and soul-stirring excitement.

Aprilia RS4 125

This Italian contender brings true GP pedigree with its 11,000 RPM scream and race-derived chassis. The Aprilia’s 15 HP engine feels more urgent at the top end, but its higher price tag and complex maintenance (liquid cooling + oil radiator) make the KTM a smarter choice for cost-conscious thrill-seekers.

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Maintenance: Keeping Your RC 125 Race-Ready

The RC 125’s maintenance needs are straightforward but demand diligence:

1. Oil Changes: KTM specifies SAE 10W-40 or 15W-50 JASO MA oil. MOTOPARTS.store recommends Motorex Cross Power 10W-50 for its superior high-RPM protection. With a 1.5L capacity (including filter), changes every 5,000 km (3,100 miles) will keep that single-cylinder singing.

2. Chain Care: The 520 X-Ring chain needs regular cleaning and lubrication. Our MOTOPARTS X-Ring Maintenance Kit includes a grunge brush and high-adhesion lube perfect for the RC’s tight rear sprocket access.

3. Brake Service: The ByBre system thrives on fresh DOT 4 fluid. Swap annually or whenever the lever feels spongy—our Brembo DOT 4 Racing Fluid enhances pedal feel during aggressive riding.

4. Cooling System: With just 1.0L of coolant capacity, biannual flushes are crucial in hot climates. MOTOPARTS High-Performance Coolant offers 10°C lower operating temps compared to OEM fluid.

5. Tire Upgrades: The stock Maxxis Supermaxx tires are competent, but switching to Pirelli Diablo Rosso III (110/70-17 front, 150/60-17 rear) unlocks another dimension of grip.

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Conclusion: The Ultimate Gateway Drug to Sportbike Addiction

The 2022 KTM RC 125 isn’t just a motorcycle—it’s a manifesto. A declaration that entry-level doesn’t have to mean entry-grade. From its track-ready suspension to its big-bike tech features, this Austrian upstart treats new riders with the same respect as seasoned racers. While its 125cc engine ensures A1 license compliance, the RC 125’s true talent lies in making every ride feel like a qualifying lap. For those about to graduate from scooters or dirt bikes, this KTM offers the most intoxicating first taste of supersport life money can buy.

Ready to personalize your RC 125? Explore MOTOPARTS.store’s curated selection of performance upgrades, maintenance kits, and styling accessories to make your KTM truly yours.

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Specifications sheet

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