Fit S4 Frame

Just got more details about the Fit S4 frame. Had a few people ask about it already in the shop, and there is not much info out there at the moment, so I thought I'd do a blog post since I haven't blogged anything in such a long time!

The next incarnation of the Mike Aitken frame will be arriving in the shop in about 10 days time. Retail price is £399.99.




"Mike wanted the S4 to be as simple and classic looking as possible while using every new development in materials and workmanship available to improve on the S3.5. We’ve been working on new material for a Down Tube for the last six months so once that was finished and tested we were ready to go. The end result is a clean, classic frame that’s strong and still less than 5 pounds. Here are a few of the changes from the S3.5."

• Top Tube (butted and tapered, stronger overall and cleaner looking at seat-tube junction)
• Down Tube (classic round tube look, new proprietary material is stronger and more dent resistant)
• Down Tube Gusset (new shape and material is stronger)
• Head Tube (completely new design inside and out, stronger, lighter, and cleaner looking)
• Bottom Bracket (new shape and internal machining with same ribbed vent holes as Head Tube)
• Bottom bracket height 11.625" (lower than S3.5)
• Stand over height 8.5" (taller than S3.5)
• Seat tube (tapered)
• Seat and Chain Stays (tapered but larger at the drop-out than S3.5 for added strength)
• Single bend Chain stays (maximum tire clearance)
• Curved seat and chain stay bridges
• 13.40" rear end length (13.65" previous)
• Dropout with a round seat stay cut (cleaner peg fit)
• Axle Slot – increased length
• Longer cap on Chain-Stay