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Boardman SLR alloy

Endurance road · 4 sizes

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Bike
Boardman SLR alloy · Endurance road · 4 sizes
Geometry
boardmanbikes.com, fetched 20 Oct 2026, re-checked, no differences
Cockpit
Generic stem and bar, assumed
Solved with
cover 15 mm (assumed), max spacers 40 mm (assumed), stem clamp centre 20 mm (assumed), so every verdict carries ±10 mm at the bar
Sheet
22 October 2026 · 686 bikes, 74 makes, 3,984 sizes in the catalogue

Geometry, every size, from the maker's table

The tinted row is the size drawn beside it. Press a size to draw it.
Size Stack (mm) Reach (mm) Head angle (deg) Seat angle (deg) Head tube (mm) Chainstay (mm) Wheelbase (mm)not published Standover (mm)not published
SM 547 378 72 73.5 140 415
MD 568 384 72.5 73.5 160 415
LG 589 390 73 73 180 415
XL 604 400 73 73 195 415

The table runs on to the right: 6 more columns after Reach. Scroll it sideways to read them.

Seat tube 555 mmHead tube 180 mmTop tube 570 mmDown tubeChainstay 415 mmSeat stayFork (estimated) stack 589reach 390Head tube top 390 / 589BB 0 / 0

The LG drawn to scale from the table, with no build on it. Stack and reach run from the bottom bracket to the top of the head tube; every size is solved from those two. One square is 100 mm. A dashed tube is a number the maker left out (est.).

The maker's cockpit

No stock cockpit I can name, so every size is solved on a generic stem and bar unless you choose one on the sheet.
Generic stem and barAssumedNo bar is listed for this frame.
Stock stem and bar per sizeSM 90 x 400, MD 100 x 400, LG 110 x 420, XL 120 x 440 (stem length x bar width, mm)

Frame facts

not read off the maker's page yet: boardmanbikes.com
Tyre clearance
not recorded yet
Bottom bracket
not recorded yet
Axles and brakes
not recorded yet
UDH
not recorded yet
Seatpost
not recorded yet
Frame weight
not recorded yet

In the maker's words

Kept whole, as I read it off boardmanbikes.com.
Two-piece: "Boardman Alloy, 31.8mm clamp" stem and "Boardman Alloy, 31.8mm clamp, 75mm reach, 120mm drop" handlebar; the panel prints stem 90/100/110/120 mm and bar 400/400/420/440 mm (SM to XL).
Cockpit and seatpost, in the maker's words · 29 words
Two-piece: "Boardman Alloy, 31.8mm clamp" stem and "Boardman Alloy, 31.8mm clamp, 75mm reach, 120mm drop" handlebar; the panel prints stem 90/100/110/120 mm and bar 400/400/420/440 mm (SM to XL).
OFFICIAL SOURCE: Boardman Bikes product page for the SLR 8.6 (2021, triple-butted 6061 aluminium frame, C7 carbon fork), four sizes SM to XL. Source: html table (official Boardman Bikes product page "SLR 8.6" (2021), "Sizes & Fit" panel rendered as div rows, parsed by script; fetched 2026-10-20
How I read the maker's table
The SLR 8.8 Disc 2021 page (https://www.boardmanbikes.com/gb_en/products/2340-slr-8.8-2021.html, checked 2026-10-20) prints the same panel cell for cell. The "Sizes & Fit" panel (div rows in the page markup, not a <table>) prints: Size, Recommended Height, Recommended Inside Leg, S Stack, R Reach, ST Seat Tube, TT Top Tube, HT Head Tube, HA Head Angle, SA Seat Angle, CS Chainstay, FO Fork Offset, BB Bottom Bracket Drop, Crank Length, Stem Length, Handlebar Width. Degree signs stripped by the parser. Trail and standover are not printed (null); stack datum not stated (null). Wheelbase and front centre not printed (null). Clearance "up to 28mm* tyres" (25mm with mudguards). Model year 2021 from the URL slug. Source: html table (official Boardman Bikes product page "SLR 8.6" (2021), "Sizes & Fit" panel rendered as div rows, parsed by script; fetched 2026-10-20, HTTP 200)