- News
- Reviews
- Bikes
- Accessories
- Accessories - misc
- Computer mounts
- Bags
- Bar ends
- Bike bags & cases
- Bottle cages
- Bottles
- Cameras
- Car racks
- Child seats
- Computers
- Glasses
- GPS units
- Helmets
- Lights - front
- Lights - rear
- Lights - sets
- Locks
- Mirrors
- Mudguards
- Racks
- Pumps & CO2 inflators
- Puncture kits
- Reflectives
- Smart watches
- Stands and racks
- Trailers
- Clothing
- Components
- Bar tape & grips
- Bottom brackets
- Brake & gear cables
- Brake & STI levers
- Brake pads & spares
- Brakes
- Cassettes & freewheels
- Chains
- Chainsets & chainrings
- Derailleurs - front
- Derailleurs - rear
- Forks
- Gear levers & shifters
- Groupsets
- Handlebars & extensions
- Headsets
- Hubs
- Inner tubes
- Pedals
- Quick releases & skewers
- Saddles
- Seatposts
- Stems
- Wheels
- Tyres
- Health, fitness and nutrition
- Tools and workshop
- Miscellaneous
- Cross country mountain bikes
- Tubeless valves
- Buyers Guides
- Features
- Forum
- Recommends
- Podcast
forum
Headsets
First post folks so please excuse the ignorance.After many years cycling I,ve bitten the bullet and set myself a project to build my own bike based on a px rt58 bare frame. I,m informed I need to fit a FSA -C-40 Acb tapered headset which I,ve located on the web but it gives two options ie 9mm or 15 mm cone spacer.Does it really matter which at this stage as when or if I cut the fork head I can fit various spacers between stem.I appreciate that this is an expensive way to build a bike and could by a complete bike cheaper than the sum of it,s parts but it will be a project to keep an old man busy. Thanks in advance for any help 
If you're new please join in and if you have questions pop them below and the forum regulars will answer as best we can.
Latest Forum Topics
Latest Comments
- GMBasix 6 min 1 sec ago
It also needs some better communication from DVSA about the changes. Very few drivers seem to know about them or care to follow them.
- wtjs 12 min 12 sec ago
I think you're both wrong- this post is so bad that it's not even one of the standard trolls, it's a troll mocking the opinions he claims to...
- Sredlums 42 min 40 sec ago
"ruin the wax on a molecular level"...
- chrisonabike 44 min 28 sec ago
I'm gonna guess something like "front wheel skids always throw you off but not rear wheel ones"......
- hawkinspeter 55 min 22 sec ago
How can that possibly not be a deliberate decision?...
- JMcL_Ireland 55 min 25 sec ago
SBS in Australia. They have the Tour, Vuelta, Giro, and a bunch of other races - all free and live. I think they do catch-up as well
- jayinjapants 4 hours 25 min ago
Mine takes 38s but the clearance on the front derailleur is rather tight.
- Simmo72 10 hours 32 min ago
TNT can sit on my seatpost and swivel. Not giving a penny to the vile bean counters.
Add new comment
1 comments
It shouldn't matter in the slightest. It'll be your choice whether your stem will sit 6mm higher or lower. Personally, I'd go for the 9mm as you can always increase the height with spacers, whereas if you go with the 15mm you won't have the option to reduce stem height.