Bike compatibility at a glance

Will my cassette fit my trainer?

The cassette goes on the trainer's freehub body. If the freehub does not match your cassette, nothing else matters.

• On SRAM, a 10t smallest cog means XDR (Elite).
• If the biggest cog on the trainer is larger than the one on your bike, "you can damage your drivetrain" (Wahoo).

SRAM 13-speed on Elite: Elite's product page says 12-speed, its compatibility PDF says 12/13 for the same part. Check with Elite if you run 13. Garmin doesn't state which cog counts the Tacx XD-R body supports.

Full guideSmart trainer compatibility for 12 and 13-speed drivetrains

Will the Zwift Cog work on my trainer?

The Zwift Cog is a single sprocket that goes on a Shimano Hyperglide freehub body, on direct-drive trainers only.

• Freehub: not compatible with Shimano Micro Spline, SRAM XD/XDR or Campagnolo bodies. If you moved your trainer to an XDR body for SRAM, the Cog needs a Hyperglide body back on.
• Not on Zwift's list: the Tacx FLUX trainers, Wahoo KICKR v5 and older, and Elite's Zumo, Drivo and Drivo II.
• Cog size: a 14-tooth Cog for every compatible trainer, except Elite, which gets an 18-tooth Cog.
• Bike speeds: Zwift, Wahoo and Garmin say 8 to 13-speed. Decathlon and JetBlack say 8 to 12-speed. On 13-speed, check with your trainer brand. Zwift excludes Campagnolo N3W 13-speed chains.
• You don't need the Cog for virtual shifting. Wahoo, Garmin and Elite all say the firmware and a Zwift controller are what enable it.

Full guideZwift Cog compatible trainers

Can I run this tire on hookless rims?

Only if the tire brand says it is hookless (TSS) compatible. When the tire, the rim and the standard disagree, follow the lowest number. Pressure and rim width both.

• A higher max pressure printed on the tire does not override the hookless limit.
• Zipp says its TSS wheel and tire systems "should never be inflated to more than 5 bar (72 psi)."
• A tube does not make a non-approved tire safe on a hookless rim.

Full guideHookless-compatible road tires

Tool, with hookless limitsTire pressure calculator

How much does my rim change my tire width?

About 0.4 mm for every 1 mm of rim width away from the rim the tire was designed for (the ETRTO rule of thumb, as Vittoria publishes it).

• Bicycle Rolling Resistance measured about 0.425 mm per mm for road tires and 0.3 mm for gravel tires, with height barely changing.
• BRR recommends "a rim width of at least 50% of the specified tire width."

ETRTO 2020, as reprinted by BikeRadar. A fit recommendation, not a safety rule. On hookless rims, the minimums above apply.

Full guideDoes rim width change tire width?

Will a wider tire fit my frame?

Shop with the brand's stated max tire width. Frame clearance is not a tire size: Cervélo's Áspero Disc MK1 lists a 43 mm max tire but 53 mm of frame clearance.

As the brands state it. Canyon says the Grail's 57 mm needs a 1x groupset. The Revolt's 53 mm is in the long flip-chip position; the Topstone's 52 mm is a measured width.

• Use the smaller of frame and fork.
• A measured-width figure is stricter than it looks: a tire sold as 50 mm can measure wider on a wide rim.
• Cervélo recommends 4 mm of clearance between tire and frame.

Full chart by modelGravel bike tire clearance chart

Can my frame run SRAM 13-speed XPLR?

SRAM's 13-speed XPLR rear derailleurs clamp to the frame, so look for a UDH. SRAM: if your bike has a UDH, "your bike is ready for any of SRAM's Full Mount derailleurs."

• Chainstays (Force XPLR AXS): 415 mm and up endorsed with a 47.5 mm chainline. 405 to 415 mm can work with a standard road crankset at a 45 mm chainline. Rear suspension that changes chainstay length is not supported.
• Drivetrain: XPLR 13-speed cassettes and road Flattop chains only. The 13-speed RED XPLR XG-1391 cassette is listed as compatible with the XDR driver body.
• UDH stated by the brand: Specialized Crux 5 and Diverge 4 (FACT 9r carbon), Cannondale Topstone Carbon, Trek Checkpoint SL Gen 3, Orbea Terra and Terra Race. A frame not listed may still have one.
• No "UDH" mark on the hanger bolt does not prove there is no UDH. Some brands make their own UDH hangers.

Full guideUDH and SRAM Full Mount gravel frames

Will my cleats fit these pedals?

SPD is the two-bolt system. SPD-SL and SPD-SLR are both three-bolt, and they are not interchangeable.

SPD-SLR cleats in SPD-SL pedals: Shimano says "not compatible with SPD-SL pedals". Cycling Weekly reports they fit unofficially, but Shimano does not recommend it. SPD-SL cleats in SPD-SLR pedals: no, per BikeRadar and Bicycling.

• SPD-SLR pedals: Dura-Ace PD-R9300 and Ultegra PD-R8200. Previous Dura-Ace and Ultegra and current 105 are SPD-SL.
• Shoes: SPD-SLR cleats go on existing three-bolt shoes, including non-Shimano ones, but fore-aft adjustment moves into the shoe. The grey CL-SL130 gives traditional fore-aft range, with no stack reduction (Bicycling, Bikerumor).

Full guideShimano SPD vs SPD-SL vs SPD-SLR

Which power meter pedals fit my cleats?

No brand lists an SPD-SLR power meter pedal yet (checked 28 September 2026).

• On SPD-SLR pedals: put power somewhere else. A crank arm, spindle or spider meter doesn't care what you clip into.
• Road and gravel on one sensor: Favero and Garmin both sell road and SPD bodies for the same spindle.

Full guidesSPD-SLR power meter pedalsSPD power meter pedals for gravelBest-value power meters

How long should my chain be?

Check on the bike: chain on the largest ring and largest cog, then add what your drivetrain maker says.

Shimano dealer's manuals, SRAM chains manual, Park Tool. Shimano's count depends on which plate sits at the end of the wrap.

ToolChain length calculator