First-ride review: new Santa Cruz Bullit has put a beaming grin on my face that I can’t shake

First-ride review: new Santa Cruz Bullit has put a beaming grin on my face that I can’t shake

Revamped Bullit switches to Horst-link suspension design

9999

Tommy Wilkinson / Santa Cruz Bicycles

Published: April 15, 2025 at 7:01 am

Our review
The Bullit proves that more equals better; this bike absolutely rips

Pros:

Ride-calming geometry; supremely smooth and controlled suspension; fantastic spec; motor power and battery life

Cons:

Costly; Bosch PowerMore range extender not included; 800Wh battery capacity would cement it as a top-dog big-travel bike

Santa Cruz’s reimagined Bullit gives up its VPP suspension design, moving to a 170mm-travel Horst-link system built around the Bosch Gen 5 CX motor.

When the Santa Cruz Vala launched, plenty were sceptical about the move away from VPP, but that bike has proven the risk was well worth it, earning a perfect five-star review when I tested it.

The Bullit follows suit, building on the Vala’s performance and proving that more – in this case – is simply better.

Male rider in yellow top riding the Santa Cruz Bullit X0 AXS RSV full suspension eMTB
High-paced trails are glossed over with impunity. Tommy Wilkinson / Santa Cruz Bicycles

Rough, wild, fast, gnarly, steep, technical, tight, twisty and flowy trails are all gobbled up without the bike flinching.

The Bullit is easy to ride straightaway and requires limited technical setup knowledge to get it feeling good.

Adaptability is another strong point; you can ride it in the way that suits you best.

Whether you’re dropping the hammer or cruising about, the Bullit’s predictable performance crowns its rider as the king or queen of the hill.

Santa Cruz Bullit X0 AXS RSV frame, suspension and motor

Santa Cruz Bullit X0 AXS RSV full suspension eMTB
The Bullit is a long-standing name in Santa Cruz's range. Tommy Wilkinson / Santa Cruz Bicycles

Built from Santa Cruz’s top-spec CC carbon fibre, the Bullit’s frame and bearings have a lifetime warranty.

The chunky one-piece rocker link and a seatstay bridge are both designed to improve stiffness.

Cables are routed internally via ports on the head tube – rather than through the headset – and there’s a load of chain-slap and down-tube protection.

The down tube is fully enclosed, which is claimed to boost strength further, and the straight seat tube boasts an enormous amount of post-insertion depth. It's possible to run the longest dropper posts in each size.

At the back, there’s a SRAM Transmission and UDH-compatible dropout.

Suspension

Santa Cruz Bullit X0 AXS RSV full suspension eMTB
The Horst-link design is a departure from Santa Cruz's VPP layout. Tommy Wilkinson / Santa Cruz Bicycles

No longer the elephant in the room, Santa Cruz has moved the second of its bikes to a Horst-link suspension design.

Its 170mm of travel has two progression settings – 26 per cent and 29 per cent – altered via a flip chip on the lower shock mount.

Each of its pivots runs on large, well-sealed bearings with captive axles – so they can’t be dropped – and replaceable nuts in case the threads get stripped.

Motor and battery

Santa Cruz Bullit X0 AXS RSV full suspension eMTB
Bosch's Performance Line CX motor has heaps of power and is frugal. Tommy Wilkinson / Santa Cruz Bicycles

Bosch’s Gen 5 Performance Line CX motor is fitted, boasting 85Nm of peak torque and 600W of peak power.

This is powered by an internal 600Wh battery that can’t be removed. Bosch’s 250Wh PowerMore range extender – that needs to be bought separately – can be fitted to boost battery capacity.

Santa Cruz Bullit X0 AXS RSV geometry

Three quarter pack shot of the Santa Cruz Bullit X0 AXS RSV full suspension eMTB
The Bullit delivers powerful performance without the weight penalty. Tommy Wilkinson / Santa Cruz Bicycles

The five-size range (small to XXL) has reach figures spanning 435mm to 525mm (in the high setting).

Stack heights are generous, starting at 622mm and lifting to 670mm (high setting), and are befitting of the bike’s enduro remit.


Santa Cruz Bullit geometry chart
 Small Medium Large Extra-large Extra-extra-large
Reach (mm) (high/low) 435/432 460/456 480/477 500/497 525/522
Stack (mm) (high/low) 622/625 631/635 640/643 654/656 670/674
Head tube angle (deg) (high/low) 63.6/63.3 63.6/63.3 63.6/63.3 63.6/63.3 63.6/63.3
Head tube Length (mm) 100 110 120 135 155
Rear center (mm) (high/low) 440/441 443/444 446/447 449/450 452/453
BB height (mm) (high/low) 346/342 346/342 346/342 346/342 346/342
Wheelbase (mm) 1220/1221 1252/1253 1280/1280 1309/1310 1346/1347
Effective TT Length (mm) 571/572 596/597 617/618 640/641 670/671
Seat tube length (mm) 380 400 420 460 500
Effective seat tube angle (deg) 78.6/78.3 78.7/78.4 78.7/78.4 78.7/78.4 78.6/78.3
Standover (mm) 745/740 739/735 738/733 738/733 735/730

The two-position high/low geometry flip chip slackens the head angle from 63.6 degrees to 63.3 degrees and lowers the bottom bracket from 346mm to 342mm.

Santa Cruz Bullit X0 AXS RSV full suspension eMTB
The seatstay pivot has a high and low geometry flip chip. Tommy Wilkinson / Santa Cruz Bicycles

The size-specific chainstays climb in 3mm increments from 440 (small) to 452mm (XXL).

Finally, a steep effective seat tube angle hovers around 78.7 degrees across the sizes, which is designed to create a comfortable, efficient riding position.

Santa Cruz Bullit X0 AXS RSV specifications

Santa Cruz Bullit X0 AXS RSV full suspension eMTB
Fox's latest Float X2 shock provides the damping duties out back. Tommy Wilkinson / Santa Cruz Bicycles

As the Bullit’s range-topper, the bike’s spec is virtually impossible to upgrade.

Fox’s latest Factory-level 38 fork and Float X2 shock take care of damping.

SRAM’s Maven Silver brakes and an X0 AXS Transmission drivetrain are fitted, while short 155mm cranks are specced on all sizes.

Reserve’s HD30 rims – which are brand new – are built to the also-new DT Swiss Ratchet DEG 350 hubs. These are wrapped in Maxxis DoubleDown rubber, with an Assegai up front and a Minion DHR II out back.

There’s a OneUp V3 Dropper and 42mm stem, clamping Santa Cruz’s carbon bar.

All-in, the size-large Bullit weighs a very respectable 22.27kg without pedals.

Santa Cruz Bullit X0 AXS RSV ride impressions

Male rider in yellow top riding the Santa Cruz Bullit X0 AXS RSV full suspension eMTB
It filters out unwanted inputs from the trail, so you can focus on having fun or going fast… or both. Tommy Wilkinson / Santa Cruz Bicycles

I rode the Bullit ahead of the media embargo on my home trails in Scotland’s Tweed Valley, taking in the steep, gnarly off-piste trails at Glentress and the world-famous enduro runs at the Golfie.

Despite only riding the bike for two days, I took it down my well-trodden test laps in dry, predictable conditions, so it was easy to get a true handle on its performance.

Setup

Santa Cruz Bullit X0 AXS RSV full suspension eMTB
Fox's 38 Factory fork has 170mm of travel and the latest GRIP X2 damper. Tommy Wilkinson / Santa Cruz Bicycles

Setup was easy. For my 82kg kitted-up weight, I inflated the fork’s air spring to 97.5psi and fully opened all the external damper adjustments.

At the back, I inflated the rear shock to 203psi and fully opened all the damper adjustments.

I left these settings unchanged for the duration of the test period.

I set the geometry flip chip to its low position and left the suspension progressivity setting also in its low position.

Santa Cruz Bullit X0 AXS RSV climbing performance

Male rider in yellow top riding the Santa Cruz Bullit X0 AXS RSV full suspension eMTB
Climbs to the tops of your favourite trails are the Bullit's natural habitat. Tommy Wilkinson / Santa Cruz Bicycles

Winching to the top of your favourite enduro track, the Bullit feels like the ultimate shuttle bike.

It has an upright riding position and your hips sit directly over the bottom bracket.

Your legs pedal in an efficient and comfortable downward motion, rather than stretching unnaturally in front of you, as they do on bikes with slacker seat tube angles.

The high bar and low rear end add more comfort to the mix; the Bullit takes the shape of an archetypal winch-and-plummet bike.

Santa Cruz Bullit X0 AXS RSV full suspension eMTB
Santa Cruz's own-brand carbon bar is clamped by a 42mm-long OneUp stem. Tommy Wilkinson / Santa Cruz Bicycles

This takes the weight off your hands and shoulders, instead concentrating it through your sit bones.

Long days in the saddle – permitted by the Bosch motor’s frugality – aren’t fatiguing slogs, and are as joyful as spending hours on your bike should be.

As the day goes on, you won't find yourself comfort-hunting, and continually repositioning and shuffling your backside on the saddle.

It gets even better…

Male rider in yellow top riding the Santa Cruz Bullit X0 AXS RSV full suspension eMTB
A very low bottom bracket helps it hook turns. Tommy Wilkinson / Santa Cruz Bicycles

The rear suspension is awesomely soft, supple and active – the rear wheel is sucked to the floor, tracing bumps, lumps and imperfections without fault.

Boosting grip from the rear tyre, and comfort for the rider, it’s not only a powerhouse on even the wildest, most technical and steepest climbs, but it’s also supremely smooth.

However, the rear end’s not sloppy. There’s loads of support as it compresses, helping maintain its dynamic geometry – including the steep seat tube angle – on neck-craning ascents.

Santa Cruz Bullit X0 AXS RSV full suspension eMTB
It's fitted with 155mm-long cranks, which take a bit of getting used to. Tommy Wilkinson / Santa Cruz Bicycles

The 155mm cranks take a bit of getting used to, especially if you’re coming from 170mm models; your legs feel as though they spin at higher cadences for any given speed.

But there’s loads of ground clearance – pedal strikes are few and far between.

Motor performance and battery life

Male rider in yellow top riding the Santa Cruz Bullit X0 AXS RSV full suspension eMTB
Climbs are comfortable, quick and easy. Tommy Wilkinson / Santa Cruz Bicycles

Bosch’s Gen 5 Performance Line CX motor is frugal.

I managed to eke out 1,498m of ascent over 33km in just over two hours from a single charge using only the eMTB mode.

Weather conditions, trail type, rider strength and other factors will influence this, but it’s an impressive ballpark figure.

Santa Cruz Bullit X0 AXS RSV descending performance

Male rider in yellow top riding the Santa Cruz Bullit X0 AXS RSV full suspension eMTB
Steep, rough and gnarly – the Bullit delivers no matter the terrain. Tommy Wilkinson / Santa Cruz Bicycles

If that all sounds impressive, once the Bullit is pointing downhill, its performance jumps to another level.

Exclaiming in my test notes “it’s just so f**king easy to ride”, I couldn’t get the stupid, beaming grin off my face at the bottom of each descent.

But what does that mean in practical terms?

You sit totally inert on the bike, hands on the bar, feet on the pedals – immovable and unshaken by anything.

Chaos can be unfolding around you, the trail monstrously rough, steep or fast; the bike takes that frenetic energy and distils it into bitesize chunks of manageable inputs for you to react to.

Filter like a pro racer

Male rider in yellow top riding the Santa Cruz Bullit X0 AXS RSV full suspension eMTB
Whether you're out on a quick blast or a long all-day epic, it's incredibly comfortable. Tommy Wilkinson / Santa Cruz Bicycles

Like looking through the eyes of Jackson Goldstone or Tahnée Seagrave, the Bullit filters out any unnecessary bits of on-trail clutter, doing the hard work for you.

You only feel and perceive the most important bits.

Small rocks and roots are dealt with almost autonomously, thanks to its generous geometry, and its smooth suspension adapts seamlessly to trail-surface changes.

You just need to focus on the biggest, most important things – the drop to flat, a boulder to hop or a line to stick.

Feeling like an augmented extension of your own body, the Bullit complements your skills marvellously, even on the wildest terrain.

Please sir, I want some more…

Male rider in yellow top riding the Santa Cruz Bullit X0 AXS RSV full suspension eMTB
The Bullit has got archetypal winch-and-plummet geometry. Tommy Wilkinson / Santa Cruz Bicycles

Get involved in the ride and there’s more performance to be found.

Extra grip is only a small weight shift away; sticking the hardest, most ambitious lines requires a minimal amount of rider input.

Simply focusing on your desire to take the bike on a certain trajectory is enough to make it do so.

It’s unfazed by anything you encounter and, by extension, so are you.

Santa Cruz Bullit X0 AXS RSV full suspension eMTB
The lower shock mount's flip chip swaps suspension progression. Tommy Wilkinson / Santa Cruz Bicycles

In the low-geometry flip chip position, the bottom bracket is a belly-dragging 335mm – ideal for hammering turns.

Linking up successive corners makes you feel like a champion; the bike helps you tap into the skills and finesse of pro racers by morphing your body into the optimal shape.

The hand-to-feet relationship, reach-to-rear-centre ratio (51.6 per cent to 48.3 per cent), impeccable suspension and low weight mean perfection is in the making.

Santa Cruz Bullit X0 AXS RSV early verdict

Male rider in yellow top riding the Santa Cruz Bullit X0 AXS RSV full suspension eMTB
Controlled, calm and collected, riding the Bullit is like cheating. Tommy Wilkinson / Santa Cruz Bicycles

Bar the asking price, I’m struggling to find fault with the new Bullit.

Climbing and descending performance are both class-leading. The motor power and battery life are impressive, too, and its spec is a showcase of the industry’s best products.

I thought the same things when I tested the Vala and frequently asked myself the question, 'What more does this bike need?'. But I struggled to find an answer.

After riding the Bullit, it turns out putting the Vala on steroids was the answer. In this case, more really does equal better.

Keep tuned for a full review soon.

Product

Brand Santa_cruz
Price £9999.00
Weight 22.27kg

Features

Fork Fox 38 Factory GRIPX2, 170mm travel
Stem OneUp Stem, 42mm
Chain SRAM X0 Eagle Transmission
Frame CC carbon, 170mm travel
Motor Bosch Performance Line CX / Bosch PowerTube 600 600Wh internal battery
Tyres Maxxis Assegai 3C MaxxGrip DoubleDown 29x2.5in f, Maxxis Minion DHR II 3C MaxxTerra DoubleDown 27.5x2.5in r
Brakes SRAM Maven Silver, 200/200mm HS2 rotors
Cranks SRAM X0, 34t
Saddle WTB Silverado Medium Fusion CroMo SL
Wheels Reserve 30HD rims on DT Swiss 350 Ratchet DEG hubs
Headset Cane Creek 50
Shifter SRAM Pod Controller with Rocker Paddle
Cassette SRAM X0 Eagle Transmission, 10-52t
Seatpost OneUp V3 Dropper (dropper)
Grips/tape Santa Cruz Bicycles House Grips
Handlebar Santa Cruz 35 Carbon Bar, 800mm
Rear shock Fox Float X2 Factory
Bottom bracket Bosch Performance Line CX Gen 5
Available sizes S, M, L, XL, XXL
Rear derailleur SRAM X0 AXS Eagle Transmission (1x12)