What's my Felt bike size if I'm 5'10" (178 cm)?

At 5'10" (178 cm) with a typical 80-82 cm inseam you fit a Felt 54 on the FR Advanced, AR Advanced, and VR Advanced (height range 172-181 cm). On the Breed gravel frame the 54 also covers 171-181 cm. Riders who want more standover clearance for off-road dabs can size down to a 51 without changing reach noticeably. The IA triathlon platform uses functional-position sizing, so a professional fit is recommended before committing.

Is the Felt IA the same as the Felt TT bike?

Yes. The Felt IA Advanced is Felt's current triathlon and time-trial frame, and is the bike most riders mean when they search for "Felt TT bike size chart". It uses a UCI-legal aerodynamic frame with integrated hydration. Sizing is driven by your functional threshold position (saddle setback, pad stack/reach, arm-pad width) rather than standard road numbers, so a dialed-in fit session matters before ordering.

Felt FR vs AR vs VR — which size is right for me?

Pick by use case first, then size to the same numeric label. FR is the pure race road bike (stack 535 mm at size 54), AR is the aero all-road frame with a slightly taller head tube (stack 545 mm), and VR is the endurance frame with a 575 mm stack for a more upright position. A 54 fits the same height range on all three, but the VR will feel noticeably more relaxed.

How does Felt's numeric sizing translate to S/M/L?

Felt sizes road and gravel frames by seat tube length in centimeters: 47 ≈ XS, 48 ≈ S, 51 ≈ S/M, 54 ≈ M, 56 ≈ M/L, 58 ≈ L, 61 ≈ XL. Use the height/inseam columns in the chart above rather than mapping back to S/M/L. The numeric sizes give you finer granularity, which matters most on the aero FR and IA where stem and spacer adjustment is intentionally limited.

Is the Felt Breed sized the same as the FR or VR?

The Breed shares Felt's numeric size labels with the road range but uses gravel-specific geometry: slacker head angle, longer chainstays, and added standover clearance. A 54 Breed fits the same 171-181 cm height window as a 54 VR but rides with more stability on loose surfaces. Riders coming from a 54 road frame can stay at 54 on the Breed; size down only if you want maximum standover for technical descents.

Felt Bike Size Chart

Size chart and fit guide for 2026

United StatesFounded 2001Official Website

Felt's sizing draws on their deep roots in triathlon and time trial engineering, where millimeters of fit adjustment directly impact performance and aerodynamics. Their frames use numeric sizing increments to provide granular options, and each size receives dedicated aerodynamic profiling rather than uniform tube shapes. Felt's Bayonet fork system and integrated cockpit designs mean correct frame sizing is critical, as stem and spacer adjustability is intentionally limited to preserve aerodynamic integrity.

Jump to Felt size chart ↓

Felt Size Charts by Category

Felt Road Bike Size Chart

Size	Height Range	Inseam Range
47	5'1" - 5'4"(155 - 163 cm)	27.2" - 29.1"(69 - 74 cm)
48	5'3" - 5'6"(160 - 168 cm)	28.3" - 29.9"(72 - 76 cm)
51	5'5" - 5'9"(165 - 174 cm)	29.5" - 31.5"(75 - 80 cm)
54	5'8" - 5'11"(172 - 181 cm)	31.1" - 33.1"(79 - 84 cm)
56	5'10" - 6'2"(179 - 187 cm)	32.7" - 34.6"(83 - 88 cm)
58	6'1" - 6'4"(185 - 193 cm)	34.3" - 36.2"(87 - 92 cm)
61	6'3" - 6'7"(191 - 201 cm)	35.8" - 38.2"(91 - 97 cm)

Height: 5'1" – 5'4" (155–163 cm)

Inseam: 27.2" – 29.1" (69–74 cm)

Height: 5'3" – 5'6" (160–168 cm)

Inseam: 28.3" – 29.9" (72–76 cm)

Height: 5'5" – 5'9" (165–174 cm)

Inseam: 29.5" – 31.5" (75–80 cm)

Height: 5'8" – 5'11" (172–181 cm)

Inseam: 31.1" – 33.1" (79–84 cm)

Height: 5'10" – 6'2" (179–187 cm)

Inseam: 32.7" – 34.6" (83–88 cm)

Height: 6'1" – 6'4" (185–193 cm)

Inseam: 34.3" – 36.2" (87–92 cm)

Height: 6'3" – 6'7" (191–201 cm)

Inseam: 35.8" – 38.2" (91–97 cm)

Felt Gravel Bike Size Chart

Size	Height Range	Inseam Range
47	5'1" - 5'5"(155 - 164 cm)	27.2" - 29.1"(69 - 74 cm)
51	5'4" - 5'8"(163 - 173 cm)	29.1" - 31.1"(74 - 79 cm)
54	5'7" - 5'11"(171 - 181 cm)	30.7" - 33.1"(78 - 84 cm)
56	5'10" - 6'2"(179 - 188 cm)	32.7" - 34.6"(83 - 88 cm)
58	6'1" - 6'5"(186 - 195 cm)	34.3" - 36.6"(87 - 93 cm)
61	6'4" - 6'8"(193 - 203 cm)	36.2" - 38.6"(92 - 98 cm)

Height: 5'1" – 5'5" (155–164 cm)

Inseam: 27.2" – 29.1" (69–74 cm)

Height: 5'4" – 5'8" (163–173 cm)

Inseam: 29.1" – 31.1" (74–79 cm)

Height: 5'7" – 5'11" (171–181 cm)

Inseam: 30.7" – 33.1" (78–84 cm)

Height: 5'10" – 6'2" (179–188 cm)

Inseam: 32.7" – 34.6" (83–88 cm)

Height: 6'1" – 6'5" (186–195 cm)

Inseam: 34.3" – 36.6" (87–93 cm)

Height: 6'4" – 6'8" (193–203 cm)

Inseam: 36.2" – 38.6" (92–98 cm)

Fit decision guide

How to choose the right Felt size

Back to the chart

Felt uses numeric sizes across road and gravel, but the ride position changes a lot by model. The chart gets you close. After that, compare FR, AR, VR, Breed and IA by front-end height, reach and how much cockpit adjustment the frame allows.

Best first check

Pick the height and inseam row first, then compare stack and reach on the model you actually plan to buy.

Race vs endurance

FR and AR feel lower at the front than VR. A rider can fit the same number on all three and still feel very different on the bike.

Triathlon check

IA sizing depends on pad stack, pad reach and saddle position. Treat the road chart as a starting point, not a final answer.

What to check after height and inseam

Use stack before the size label

A 54 FR, AR and VR can all match the same rider height. The VR puts the bars higher, while the FR and AR ask for more flexibility or spacer adjustment.

Leave room for the cockpit

Felt aero front ends do not offer endless stem and spacer swaps. If your reach is already long on the smaller size, sizing up usually makes the problem harder to fix.

Model family fit notes

FR and AR

Road Bike

Best for: racers who want a lower front end and a sharper road position

Most riders can start with their normal numeric road size, then check whether the reach feels too long once the aero cockpit is included.

Fit tip: If you are between two numbers and want crit-style handling, the smaller size is usually easier to tune.

VR

Road Bike

Best for: long rides, endurance events and riders who want less bar drop

The VR fits the same height ranges as the faster road frames but gives more stack. It is the safer pick when comfort matters more than a low race position.

Breed

Gravel Bike

Best for: gravel riders who want standover and stable handling on loose surfaces

Breed sizing tracks Felt road numbers but gives more off-road clearance. Riders coming from a Felt road frame usually start with the same numeric size.

Fit tip: Size down only if you want extra standover for technical descents.

IA

Best for: triathletes and time-trial riders checking pad position

IA fit depends on pad stack, pad reach, saddle setback and arm-pad width. Match those numbers before using the road size chart as a buying guide.

If two Felt sizes look possible

Choose by the position you can hold for the whole ride, not by the bigger number. Felt's aero and triathlon frames reward a frame that is close before stem, spacer or pad changes.

Pick the smaller FR or AR if you want a lower, racier cockpit and can handle the drop.
Pick the larger VR if you want a calmer endurance position and a bit more front-end height.
Do not buy an IA from height alone. Match pad stack and pad reach first.

Triathlon and time-trial frame (also searched as 'Felt TT bike') with a UCI-legal aero shape and integrated hydration storage. Sizing is based on the rider's functional threshold position rather than traditional road measurements - a professional bike fit is strongly recommended before purchasing. Size 56 measures 510 mm stack / 410 mm reach, with the reach number deliberately longer than a road frame because the saddle sits further forward over the bottom bracket in a TT position.

Stack: 510mmReach: 410mm

Felt Sizing Tips

How to Measure

• Height: Stand barefoot against a wall and measure from floor to top of head
• Inseam: Stand with feet 6 inches apart, measure from floor to crotch
• Arm Reach: For road bikes, measure from shoulder to fingertips

When Between Sizes

• Comfort priority: Choose the larger size
• Performance priority: Choose the smaller size
• Long torso: Size up for better reach
• Long legs: Size down for better standover

Felt Sizing FAQ

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