Building your own Big Dummy or need to replace your time-served Xtracycle drivetrain? You can't do much better than the SRAM PC951 9 speed chain. It includes a gold 'Powerlink' which allows easy breaking and rejoining of the chain.
NOTE - one chain is not enough for a longbike! You will need 1 and 1/2 chains. Keep the bit left over as spares! These chains are delivered boxed with instructions.
A dependable chain for all 6, 7 or 8 speed drivetrains. This is the same type/brand of chain as is supplied with all Xtracycle Freeradical kits.
NOTE - one chain is not enough for a longbike! You will need 1 and 1/2 chains. Buy 2 chains and keep the leftover as spares!
Included is an alloy chainring guard. This is essential for helping stop chain drop on singlespeed and hub geared bikes but also helps keep you best Farah slacks out of the chainring teeth!
Some bike science:
- Power spline fitting
- Chromoly chainring & crank bolts
- 175mm crank length
- 42 teeth
- Pitch black anodising
- 1 piece alloy construction
You will need a SRAM/Truvativ Power Spline bottom bracket to fit this chainset. We have a 118mm axle english cup version right here on this page.
"We have designed a specific outer gear case that is beefier than our standard freewheel. The case, like all our freewheels, is made out of 8620 steel, cased hardened and then electroless nickel plated. In short, made to last. The engagement system is a six pawl system yielding 72 points of engagement, double that of our standard freewheel. Can this freewheel be used in a typical single speed non trials application? Certainly."
We say, "very good good for fitting on Nuvinci Hubs that are fitted to Cargo Bikes." Only available in 18teeth. Made in USA
- 11-32 cog range
- Lightweight but robust
- Suitable for 9 speed systems (but should fit most 8 speed Shimano hubs too)
Shimano UN54 sealed cartridge bottom bracket for square taper cranks. Solid and dependable.
68mm shell - 118 length axle (English thread)
Buying a Surly Big Dummy Frameset? We can supply and fit this bottom bracket to a fully-prepped bottom bracket shell before we ship to you. If you'd like a different length axle please contact us and we can order one in for you. If you order these bits with a Big Dummy frame we will assume you want them fitting so if you don't want us to, just drop us a short e-mail when you have ordered.
Shimano ES51 Splined bottom bracket for Shimano Octalink cranks only. Sealed mechanism with cartridge bearings - solid and dependable.
68mm shell - 118mm axle length (English thread)
Buying a Surly Big Dummy Frameset? We can supply and fit this bottom bracket to a fully-prepped bottom bracket shell before we ship to you. If you'd like a different length axle please contact us and we can order one in for you. If you order these bits with a Big Dummy frame we will assume you want them fitting so if you don't want us to, just drop us a short e-mail when you have ordered.
It's ideal for bikes that work hard every day.
We have the perfect matching chainset for singlespeed, hub geared or 9x1 set up bikes elsewhere on this page.
118mm splined axle, English 68mm shell.
Ideal for if you are converting a double or triple chainset into a single ring chainset (for fixed gear, singlespeed or hub gear conversion!)
There are 5 bolts per pack - silver - with hex/allen key head
Superb quality
- 38 teeth chainring with 18-22 teeth rear cog
- 42-44 teeth chainring with 19-20 teeth rear cog
- Rohloff Hub specific - 44tetth chainring with 15-17 teeth cog on the Rohloff (£47.00)
Buy one of these simple little plastic/resin gizmos and that should happen less often (if at all).
Simple to fit - the part is flexible enough to to slip around the seat tube next to the point where your chain noramally sits on your smallest front chainring. Light enough to forget it's there.
3 sizes to fit different seat tube diameters available:
34.9mm (Yuba Mundo v.1 & v.2)
31.8mm
28.6mm