Trek FX 2 Stepover Gen 4 vs. Specialized Sirrus X 2.0 ST

The Trek FX 2 Stepover Gen 4 is available from £650, the Specialized Sirrus X 2.0 ST from £573.75 – a difference of £76.25. We currently compare 5 offers from online shops and retailers.

Trek FX 2 Stepover Gen 4 – 28 inches – Diamond – 2026

from £650 · 4 offers

View deal at Tiso♡ Save

In favour of the Trek FX 2 Stepover Gen 4

• higher-end groupset (Shimano CUES U4000)
• newer model year (2026)
• more offers (4)

Specialized Sirrus X 2.0 ST – 28 inches – Trapeze

from £573.75 · 1 offers

View deal at CYCLESTORE♡ Save

In favour of the Specialized Sirrus X 2.0 ST

• cheaper (−£76.25)

Key differences

• Brand: Trek FX 2 Stepover Gen 4 – Trek · Specialized Sirrus X 2.0 ST – Specialized
• Model year: Trek FX 2 Stepover Gen 4 – 2026 · Specialized Sirrus X 2.0 ST – 2025
• Groupset: Trek FX 2 Stepover Gen 4 – Shimano CUES U4000 · Specialized Sirrus X 2.0 ST – microSHIFT
• Gears: Trek FX 2 Stepover Gen 4 – 9 · Specialized Sirrus X 2.0 ST – 8
• Brakes: Trek FX 2 Stepover Gen 4 – Tektro · Specialized Sirrus X 2.0 ST – Hydraulic disc

Full spec comparison

	Trek FX 2 Stepover Gen 4 – 28 inches – Diamond – 2026View deal at Tiso	Specialized Sirrus X 2.0 ST – 28 inches – TrapezeView deal at CYCLESTORE
Price from	£650	£573.75
Offers	4	1
Brand	Trek	Specialized
Model year	2026	2025
Groupset	Shimano CUES U4000	microSHIFT
Gears	9	8
Drivetrain	Derailleur	Derailleur
Brakes	Tektro	Hydraulic disc
Wheel size	28"	28"
Frame	Aluminium	Aluminium
Weight	–	12.1 kg
	View deal View product on superbike8.co.uk ›	View deal View product on superbike8.co.uk ›

Green = best value in this comparison. Data from manufacturers and retailers, no guarantee. Prices incl. tax, as of 5 October 2026.

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