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Sunday Knox V2 Sprocket (25T) Sprocket

What the checker says5will not fit2check before you buy

Run variant by variant through the BMX builder’s own engine. Every sentence below is the checker’s, unedited. Nothing here says this part fits your bike; it says what it does and does not fit among the parts we hold.

Checked against 664 verified BMX parts in this catalog. 648 produced no finding of any kind.

Will not fit

  • Will not fiterror · CranksSprocket/crank drive mismatch: Sunday Knox V2 Sprocket (25T) is a spline-mount sprocket and Box Three Hollow-Forged Crankset (170mm) has a press-on ring interface - two different mounting systems, so it does not mount as it is. Most sprockets are made for one drive style; a few makers publish an adapter insert for their own sprocket (Profile's Sabre inserts are the known example). A shim or adapter may make other sizes or standards work, but that is a modification, not a fit. On 1 of the 38 verified cranks in this catalog.
  • Will not fiterror · CranksSprocket/crank drive mismatch: Sunday Knox V2 Sprocket (25T) is a spline-mount sprocket and Box Two Oversized M30-P Crankset (172.5mm) has a press-on ring interface - two different mounting systems, so it does not mount as it is. Most sprockets are made for one drive style; a few makers publish an adapter insert for their own sprocket (Profile's Sabre inserts are the known example). A shim or adapter may make other sizes or standards work, but that is a modification, not a fit. On 1 of the 38 verified cranks in this catalog.
  • Will not fiterror · CranksSprocket/crank drive mismatch: Sunday Knox V2 Sprocket (25T) is a spline-mount sprocket and Haro Fusion Cranks has a press-on ring interface - two different mounting systems, so it does not mount as it is. Most sprockets are made for one drive style; a few makers publish an adapter insert for their own sprocket (Profile's Sabre inserts are the known example). A shim or adapter may make other sizes or standards work, but that is a modification, not a fit. On 1 of the 38 verified cranks in this catalog.
  • Will not fiterror · CranksSprocket/crank drive mismatch: Sunday Knox V2 Sprocket (25T) is a spline-mount sprocket and Profile Racing Race Cranks has a press-on ring interface - two different mounting systems, so it does not mount as it is. Most sprockets are made for one drive style; a few makers publish an adapter insert for their own sprocket (Profile's Sabre inserts are the known example). A shim or adapter may make other sizes or standards work, but that is a modification, not a fit. On 1 of the 38 verified cranks in this catalog.
  • Will not fiterror · CranksSprocket/crank drive mismatch: Sunday Knox V2 Sprocket (25T) is a spline-mount sprocket and Salt Revo Crank 175mm has a press-on ring interface - two different mounting systems, so it does not mount as it is. Most sprockets are made for one drive style; a few makers publish an adapter insert for their own sprocket (Profile's Sabre inserts are the known example). A shim or adapter may make other sizes or standards work, but that is a modification, not a fit. On 1 of the 38 verified cranks in this catalog.

Check before you buy

  • Check before you buywarning · Rear CogChain width mismatch: Sprocket = 1/8in, Rear cog = 3/32in. Sprocket, cog and chain should share one width class (1/8in or 3/32in) - a mixed stack runs but skips and wears fast. On 10 of the 29 verified rear cogs in this catalog.
  • Check before you buywarning · ChainChain width mismatch: Sprocket = 1/8in, Chain = 3/32in. Sprocket, cog and chain should share one width class (1/8in or 3/32in) - a mixed stack runs but skips and wears fast. On 1 of the 21 verified chains in this catalog.
The checker compares the dimensions listed in what we check, and what we don’t. “No conflicts found” means no conflict among those dimensions — not a guarantee that a build works. Errors mean it won’t fit; warnings mean it works but check; infos are notes.

$64.99 MSRP·159 g

What the maker states

Teeth
25 teeth
Mount
Spline
Pitch
1/8"
Source

Source: the maker’s page. Last checked 2026-07-24.

Checked against

The checker ran this model against every verified part below that it has a slot for, the same way it checks a build in the builder. What follows is the verdict it actually produced for that specific pairing — not a recommendation, and not a guarantee any of these parts fits your own bike.

6 of 524 counterparts with a page of their own that the checker actually probed this model against, in alphabetical order by brand and model — never by price, popularity or the verdict itself.

Where this sits

Sunday Knox V2 Sprocket (25T) is the first model on that list.Next: Sunday Knox V2 Sprocket (28T)All Sunday sprocketsOpen a variant in the builder to see the ones that apply to your own parts