44.5cm Diamond Back Ascent c.1991 Classic American Mountain Bike Frame
✓ Original classic frame - built in the 1990s
✓ Thoroughly checked over & photographed in detail
✓ Worldwide shipping
Though they only have a relatively short history, dating back to 1977, Diamond Back became big players in the bike industry by targeting the burgeoning BMX and MTB scenes. Located in California they were ideally placed to be early adopters to both the small wheel and the 26" wheel revolutions, and sold a huge number of bikes as a result. Probably best known for their DBR series of high end mountain bikes, Diamond Back built some really interesting, cutting edge bikes out of titanium, aluminium, steel and even welded carbon fibre.
The Ascent has been in the Diamond Back MTB line up since the mid 1980s when the company were one of the early adopters of the mountain bike scene. Though an entry level bike the Ascent was built with the same DNA as the higher end bikes in the line up, sharing geometries and frame design with more expensive bikes. Ever-present in the line up for over a decade the Ascent was the introduction to mountain biking for thousands across the world.
The frame's been carefully checked by one of our mechanics to confirm the alignment's correct and there's no damage to the threads. If there are any minor issues worth noting we will do so in the overview section below. Please take a good look at the detailed photos so you can see the cosmetic condition of the frame before you buy.
Condition Notes -
Tiny ding on top tube, likely from handlebars swinging round.Era -
AmericanFrame Material -
3.355 kgStock Code -
Size Guide* - N/A
Seat Tube (ctc) - 44.5 cm
Top Tube (ctc) - 56.5 cm
Head Tube - 110 mm
Chainstay Length - 42.5 cm
Wheelbase - 105.5 cm
*This is just a guide, not a guarantee the frame will fit as every rider is different. If you're unsure of your size we'd always recommend trying out a bike with similar frame dimensions first.
Rear Spacing -
135 mmFront Spacing -
100 mmSeatpost Diameter -
27.0 mmWheel Size -
26"Brake Fixing -
Cantilever / V-BrakeBottom Bracket Thread -
English/British/ISO ThreadHeadset Thread -
Standard ISO (24 TPI - British/Italian)Headset Stack Height -
34 mmFork Crown Race -
30.0 mmHeadtube Internal Diameter -
34.0 mmSteerer Internal Diameter -
25.4 mm (Standard 1 1/8")
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▼SHIPPING, TAXES & RETURNS
We've been safely sending orders around the world since 2010. There's a handy shipping calculator on the shopping cart page so you can see the cost of postage as soon as you've added it to your basket. Your order will be carefully packed and sent with tracking & insurance, we despatch most orders within 2-3 days but larger items and orders placed before the weekend can take an extra day or two to process.
We accept returns, please notify us within 14 days and ensure the item arrives back with us no later than 30 days after the order was received.
We don't charge VAT, however, if buying from outside of the UK please remember that there may be import fees to pay directly to the delivery company before receiving the order. Unfortunately we can’t advise on the exact costs as it varies from country to country, so please check your national rates before purchasing.
Seat Tube (ctc) - we measure from the centre of the bottom bracket shell up to the centre line of the top tube to give a consistent measurement regardless of frame design (ctc means centre to centre).
Top Tube (ctc) - this is measured from the centre of the head tube to the centre of the seat tube, along the centre of the top tube.
Chainstay Length - measured from the centre of the bottom bracket shell to the centre point of the rear dropout.
Wheelbase - measured from the centre of the front fork dropout to the centre point of the rear dropout.
Front & Rear Spacing - measured from the inside of one dropout to the other. The dropouts on steel frames can be stretched or squeezed a few mm but it's always best to avoid this if possible, aluminium or carbon frames should never be stretched.