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IRC RX-01: sizes and matching bikes

All tire models | Back to the chart (pick another bike) | All bikes, every brand | 日本語

Type: Standard ／ Street legal

About this tire

IRC highlights the “fresh pattern with very wide S-shaped grooves” and the “absolute confidence it gives the rider.” ★ Every size is WT (tube type), so it will not suit a tubeless wheel ★ The limited-run SPEC R is out of the current lineup and is not listed here.

Across the six axes, Life sits at 4 and Sport at 2. Neither extreme nor flat. Of the 101 tires in the Standard group, 90 carry 4 for Life. 1 front sizes and 2 rear, mostly 17-inch.

Our rating (1–5)

Dry3 / 5
Wet3 / 5
Life4 / 5
Warm-up3 / 5
Comfort3 / 5
Sport2 / 5

OE sizes can differ by model year and market — the sidewall of your own bike is the sure reference. This is a Japanese-market lineup; the sizes themselves are international.

Size lineup

Front

Rear

Bikes whose OE sizes it fits

Of the 260 bikes on file, this tire’s size lineup fits the OE sizes of 29. Each link opens the tires you can pick for that bike.

ModelYearsFrontRear
BMW F 450 R / RR2027 model110/70ZR17150/60ZR17
BMW G 310 R2016–present110/70R17150/60R17
KTM 125 DUKE2025–26 models110/70ZR17150/60ZR17
KTM 125 SMC R / 390 SMC R2025–26 models110/70R17150/60R17
KTM 250 DUKE2026 model110/70R17150/60R17
KTM 390 DUKE2025 model110/70ZR17150/60ZR17
Kawasaki KLX230SM2026 model110/70-17120/70-17
Kawasaki Ninja 2502027 model, on sale 5 Sep 2026110/70-17140/70-17
Kawasaki Ninja 4002027 model110/70R17150/60R17
Kawasaki Ninja 5002026–27 models110/70R17150/60R17
Kawasaki Ninja e-1 / Z e-12024–present100/80-17130/70-17
Kawasaki Ninja ZX-25R SE / ZX-25RR2027 model110/70R17150/60R17
Kawasaki Z2502019–present110/70-17140/70-17
Kawasaki Z4002019–present110/70R17150/60R17
Kawasaki Z5002026–27 models110/70R17150/60R17
Suzuki Gixxer 2502020–present110/70R17150/60R17
Suzuki Gixxer SF250current as of Aug 2026110/70R17150/60R17
Triumph Speed 400current as of Aug 2026110/70R17150/60R17
Triumph Speed T4current as of Oct 2026, India spec110/70-17140/70-17
Triumph Thruxton 400 / Tracker 400current as of Nov 2026110/70R17150/60R17
Honda CB125R2024 model110/70R17150/60R17
Honda CB250Rto Aug 2024, discontinued110/70R17150/60R17
Honda CBR250RR2025 model110/70R17140/70R17
Yamaha MT-032015–present110/70R17140/70R17
Yamaha MT-252015–present110/70-17140/70-17
Yamaha XSR125 / XSR1552026 model110/70-17140/70-17
Yamaha YZF-R32026 model110/70R17140/70R17
Yamaha YZF-R252026 model110/70-17140/70-17
Royal Enfield Hunter 350current as of Nov 2026110/70-17140/70-17

See also

Other Standard tires (100)

Tires in the same group, to compare ratings and size lineups.

Where to buy

AmazonRevZillaWebike (Japan)

Sources

How to read this

Follow on X for updates @2strokegoat ― posts when new tires and bikes are added