More Details More Details

We put this custom-build bike from Guru through its paces in our four-ride review.


This frame was made to measure for us to test and we also chose the components: Shimano Dura-Ace groupset and Mavic R-Sys SLR wheels, for a total weight of 5.95kg (13.0lb). From the first ride it felt like the tailored bike we were promised with a stiffness/comfort balance exactly like the 70/30 weighting we asked for. The fit gave it a familiar feel.


The Guru got more than its share of fast rides on a great variety of roads. It’s a really stiff frame, so all your power is transferred effectively. The frame’s rigidity, coupled with Mavic’s extremely stiff and light R-Sys SLR wheels, means acceleration is scorching. We specified a higher bottom bracket for pedaling clearance through corners and it made a big difference.


The Photon is smooth when seated and highly reactive when you get out of the saddle to sprint. The front-end rigidity that lets you haul on the bars also provides excellent steering stability and the Enve fork always tracks accurately. We had no worries letting it run up to 50mph on an unknown road, nor staying off the brakes on our favourite local descents.


A long ride is where a custom fit bike makes a difference. Five-and-a-half-hours and 106 miles was our longest ride and at the end, apart from the usual sore bum, we had no aches or pains. A custom frame is the best solution and for anyone with unusual dimensions it can be the only one. We’d asked for this bike to prioritise stiffness over comfort, yet it’s still decently smooth.

Price £3,999
Weight 5.95kg/13.1lbs
Frame Photon custom, HS-40 carbon
Fork Enve full carbon, 1 1/8”
Seatpost Selle Italia
SLR Kit Carbonio

Stem New Ultimate
Transmission Shimano Dura-Ace
Brakes Shimano Dura-Ace
Chainset Shimano Dura-Ace
Saddle Selle Italia SLR-XP
Wheels Mavic R-Sys SLR
Tyres Yksion Grip Link (front) Yksion Power Link (rear)
Cockpit New Ultimate carbon bar and stem

This review was originally published in Triathlon Plus magazine. Save time and money by having every issue delivered to your door or digital device by subscribing to the print edition or buying digitally through Zinio or Apple Newsstand.

You’ll find loads more triathlon gear and kit reviews in’s Gear section