Honda CRF (2023)manufacturer fact
Honda's reviewed manual specifies this exact IRC pair, construction and tube requirement.
All motorcycle tyres
Field Knowledge · Tyre Library
IRC GP-21F / GP-22R
Honda specifies the IRC GP-21F front and GP-22R rear as the standard dual-purpose pair in the reviewed CRF manual.
2 published sizes
1 front · 1 rear
unknown
Front and rear options
Available sizes
These are the front and rear sizes published for this tyre. Choose your motorcycle and year below to check the complete fit.
Front
- 80/100-21 51Pbias
Approved rim range not published · tube required
Rear
- 120/80-18 62Pbias
Approved rim range not published · tube required
Check the complete fit
Choose your bike and year
Honda CRF250L · 2026
Sizes match, but more needs checking
Matching front and rear sizes exist, but some motorcycle requirements or the front-and-rear pairing still need confirmation.
Motorcycle front
80/100-21M/C 51P
80/100-21
Motorcycle rear
120/80-18M/C 62P
120/80-18
Front and rear pair checked
Front 80/100-21 · Rear 120/80-18
The individual sizes are listed, but the front and rear combination has not been confirmed. Matching-looking sizes do not establish the pair.
How this comparison was made
Comparison method tyre-fitment-v1
Front checks · more needs checking
Front or rear position
Your bike needs front
This tyre: front
Tyre position must match the wheel position.
Sizing system
Your bike needs metric
This tyre: metric
The sizing system must match unless a checked conversion applies.
Width
Your bike needs 80
This tyre: 80
The width or complete older-style size must match the motorcycle information.
Aspect ratio
Your bike needs 100
This tyre: 100
Metric aspect ratio or the complete legacy designation must match.
Rim diameter
Your bike needs 21
This tyre: 21
Rim diameter must match exactly.
Approved rim range
Your bike needs Not established
This tyre: Not established–Not established
The vehicle rim width must sit inside the tyre manufacturer's approved range.
Load index
Your bike needs 51
This tyre: 51
The tyre load rating must meet or exceed the motorcycle minimum.
Speed rating
Your bike needs P
This tyre: P
The tyre speed rating must meet or exceed the motorcycle minimum.
Construction
Your bike needs Not established
This tyre: bias
The motorcycle information must allow this tyre construction.
Tube or tubeless rule
Your bike needs tube
This tyre: tube
Tube and tubeless requirements must be compatible.
Manufacturer restriction
Your bike needs none found
This tyre: not confirmed
Check any motorcycle-maker restrictions before fitting this tyre.
Source information
Your bike needs checked source information
This tyre: tyre record: reviewed · bike information: still being checked
The tyre and motorcycle information both need checked sources.
Rear checks · more needs checking
Front or rear position
Your bike needs rear
This tyre: rear
Tyre position must match the wheel position.
Sizing system
Your bike needs metric
This tyre: metric
The sizing system must match unless a checked conversion applies.
Width
Your bike needs 120
This tyre: 120
The width or complete older-style size must match the motorcycle information.
Aspect ratio
Your bike needs 80
This tyre: 80
Metric aspect ratio or the complete legacy designation must match.
Rim diameter
Your bike needs 18
This tyre: 18
Rim diameter must match exactly.
Approved rim range
Your bike needs Not established
This tyre: Not established–Not established
The vehicle rim width must sit inside the tyre manufacturer's approved range.
Load index
Your bike needs 62
This tyre: 62
The tyre load rating must meet or exceed the motorcycle minimum.
Speed rating
Your bike needs P
This tyre: P
The tyre speed rating must meet or exceed the motorcycle minimum.
Construction
Your bike needs Not established
This tyre: bias
The motorcycle information must allow this tyre construction.
Tube or tubeless rule
Your bike needs tube
This tyre: tube
Tube and tubeless requirements must be compatible.
Manufacturer restriction
Your bike needs none found
This tyre: not confirmed
Check any motorcycle-maker restrictions before fitting this tyre.
Source information
Your bike needs checked source information
This tyre: tyre record: reviewed · bike information: still being checked
The tyre and motorcycle information both need checked sources.
Still needs checking: construction, source information, any manufacturer restrictions, front and rear pairing, approved rim width, a named tyre match.
Bikes that use the same front and rear sizes
Honda CRF250L · 2021Honda CRF250L · 2022Honda CRF250L · 2023Honda CRF250L · 2024Honda CRF250L · 2025Honda CRF250L · 2026Honda CRF300L · 2021Honda CRF300L · 2022Honda CRF300L · 2023Honda CRF300L · 2024Honda CRF300L · 2025Honda CRF300L · 2026
The sizes match, but that alone does not confirm fitment. Open a bike to check every requirement.
Motorcycle reports
Where this tyre has been used
These reports connect this tyre with a named motorcycle. Check the year, source and note before treating a report as relevant to your bike.
A reported or original-equipment tyre is not automatically suitable for every year, market, rim or alternative size. Check the exact front and rear result above.
Tests and rider reports
What we know
Compare the tyre maker’s description with independent tests and rider reports. Each report keeps its motorcycle, conditions, date and limitations so you can judge how closely it matches your ride.
Independent tests
Observed performance from a named editorial test, tied to its vehicles, conditions and date.
No checked independent tests are available for this tyre model yet.
Rider reports
Reported experience, not a manufacturer fact or a Breakstate promise.
No checked rider reports are available for this tyre model yet.
Conditions we still need information for
Sealed roadsWet roadsMaintained gravelLoose gravelCorrugationsDeep sandMudLoose rockDifficult trailsSnowIce
Where this tyre has been used on a route
No route-specific report is listed for this tyre yet. General condition reports are not presented as proof for a particular route.