Reynolds 931 Road Bike
Gosforth 931
Reynolds 931 Frame
Reynolds 931 road frame
Reynolds 931
Reynolds stainless
Stainless tubeset
Gosforth 931
Reynolds 931 Frame
Reynolds 931 road frame
Reynolds 931
Reynolds stainless
Stainless tubeset

Gosforth Reynolds 931

Gone Riding

Back in 2021.

All our 2020 stock is now sold out. We'll be back in February with the 931 and 953 frames and something new in Titanium.
- DJ and the team at (Sep 2020)

£830 With Free International Shipping.
Gosforth Reynolds 931 XL
Sold Out
Free Shipping, Free Returns & 10 Year Warranty.

Gosforth Reynolds 931 Road Bike Frame

One for the purists. Classic race geometry slung low and long for an aggressive position and nimble handling for when you ride hard and launch through corners.

TIG-welded using Reynolds 931 tubing, the latest development in high-performance alloys from the renowned British factory. Lighter than most titanium frames. Strong enough to last a lifetime.

On the road the 931 frame gives you that feeling that only high quality steel bikes deliver: That bright, dynamic, alive sensation connecting the rider to the bike and the bike to the road.

Take a look at some 931 builds here.

Reynolds 931 Tubeset

Reynolds 931 alloy has an ultimate strength twice that of 3Al/2.5V titanium at a density of only 7.8 grams/cm3, originally developed for aviation and motorsport applications.

This frame's main triangle uses aggressively short-butted tubes at 0.4mm/0.7mm to move stresses away from the weld area and optimise for stiffness and weight. At the bottom bracket the down tube is horizontally ovalized at 40 degrees and the chain stays are over-sized and shaped to maximise power transfer.

Proudly TIG-welded by hand in Taiwan.

Component Sizes
1 1/8 inch external headset
English threaded 68mm BB
32mm banded front mech
27.2mm seat post
31.8mm seat post collar
Up to 700x25c tyres
Derailer Hanger - PILO D221 (supplied)
No braze-ons for mudguards or racks

Time tested angles and tube lengths for a more aggressive position. The 931 is shorter on the front, going against the trend for ever growing head tubes. You will need a strong core get the most out of it.

Moderate angles give a balanced position and neutral trial (around 60mm with 45mm fork rake) for a fluid feeling through the bars. A 68mm bottom bracket drop places the rider's weight lower for improved feel, confidence on sharp descents and when you let it run through quick corners.

Reynolds 931 Road Frame Geometry
Size Top tube Seat tube Seat tube C-C Seat angle Stand over Chain stay BB drop Head tube* Head angle Stack Reach Trail Grams
S/M 540 515 475 73.5 760 405 68 115 72.5 543 379 60 1473
M 555 535 495 73 774 408 68 130 73.0 559 384 57 1547
L 570 545 515 73 792 410 68 145 73.0 573 395 57 1573
XL 585 560 530 73 802 412 68 160 73.0 588 405 57 1690

* With an external headset you will gain around 20mm on the head tube measurement shown depending on the headset's stack height.

Trail calculated with 45mm fork rake and 23mm tyres.

Rider feedback suggests this frame runs slightly small. If you are between sizes, we recommend the larger frame.

Reynolds 931 Road Bike Frame
Reynolds 931