Boardman SLR 8.9 Disc vs Dolan RDX Aluminium Disc - Shimano 105 R7120

Both are endurance bikes at a similar price. Here is what actually separates them.

The short answer

For a typical all-round rider the Dolan RDX Aluminium Disc - Shimano 105 R7120 comes out ahead (75% against 71%). That is not a universal verdict — change the terrain or the priority and the order can flip.

Boardman

SLR 8.9 Disc

71% for a typical rider

£1,100 at Brand website

Unverified

Dolan

RDX Aluminium Disc - Shimano 105 R7120

75% for a typical rider

£1,200 at Brand website

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What actually separates them

Price: The Boardman SLR 8.9 Disc is £100 cheaper — £1,100 against £1,200.
Weight: The Dolan RDX Aluminium Disc - Shimano 105 R7120 is 0.4kg lighter, which you notice on long climbs more than anywhere else.
Tyre clearance: The Dolan RDX Aluminium Disc - Shimano 105 R7120 takes 35mm tyres against 32mm — the single most common thing buyers wish they had more of.

Side by side

Spec	SLR 8.9 Disc	RDX Aluminium Disc - Shimano 105 R7120
Price	£1,100	£1,200
Weight	10.2 kg	9.8 kg
Frame	alloy	alloy
Groupset	Shimano 105 R7000 mechanical	Shimano 105 R7120 mechanical
Stack / reach	1.54	1.53
Tyre clearance	32 mm	35 mm
Lowest gear	27 in	27 in
Mudguard mounts	Yes	Yes
Comfort	52	51
Speed	36	42
Climbing	44	49
Value	62	60

Neither might be the right answer

This page assumes an average rider. Tell us how you actually ride and we will rank these two against everything else at the price.

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