This page is from a former STEVENS Bikes model year (2019). These pages are meant as a service in case you have questions about equipment and geometry of older STEVENS bikes. You can pick other model years at Service – Product Years.

Sonora ES

Hmotnost	10.6 kg
Velikost	27,5" - 16" \| 29" - 18", 20", 22"
Frame	Carbon SL HMF
Barva	Foggy Grey

Pricing

doporučené VK: 2 549,– €

This Is What You Get …

... when STEVENS designs a racing machine for ambitious marathon riders on big 29" wheels: A top of the line carbon monocoque frame. Partnered with components that easily take the pounding of a full racing season - from Shimano's Deore XT 2x11-speed drivetrain and Ice-Tech brakes to the stylish DT Swiss wheelset. Long story short: It's the Sonora ES.

Fast carbon hardtail with first-class handling
Lightweight Fox 32 Float Step Cast suspension fork w/ lockout remote control
Full Shimano Deore XT 2x11 groupset
DT Swiss M 1900 Spline wheels w/ boost axle standard
Overall weight suitable for marathon racing: only 10.4 kg (23 lbs)

Technology

Boost-Standard fork

What is right for the rear wheel is even more important at the front wheel - because steering precision matters.

Boost Rear Axle Spacing

Since model year 2016 the axle spacing in the rear stays of all STEVENS fullies adhere to the new "Boost" standard.

High-Modulus Carbon Fibres

For incredibly light frames and utmost stiffness.

Versatile cable routing

To ride your bike like you want to: Versatile cable routing.

Di2-ready

Frames prepared for an elegant integration of electronic shifting.

Tapered Steerer / Tapered Headtube

Riders benefit from noticeably higher steering precision, almost without weight penalty.

QR15 Front Thru-Axle

The most useful method to fix the front wheel to the (suspension) fork.

Boost-Standard Fork

What is right for the rear wheel is even more important at the front wheel - because steering precision matters. This is why STEVENS uses suspension forks and hubs with extra wide axle spacing for all its fullies, as well as for the trail rocket Sonora and the alloy-hardtails Colorado and Sentiero. These 110mm of axle spacing are called "Boost" or "Plus" and stand for lots of added lateral stiffness plus space for extra wide studded tires.

Boost Rear Axle Spacing

Since model year 2016 the rear stays of all STEVENS fullies adhere to the new "Boost" or "Plus" standard with 148 mm axle spacing. And there are good reasons for that. Rear wheel stiffness increases by 20 % which is especially beneficial in large 29" wheels. And there is more space for voluminous studded tires to give you more control and fun an the trail.

High Modulus Carbon Fibers

Only the very best materials are used for the highest quality STEVENS carbon frames - so called high modulus carbon fibres. They offer a perfect combination of maximum toughness and targeted elasticity. This way they provide maximum lateral stiffness for best forward drive and a high amount of comfort. Result: incredibly light and enormously stiff frames.

Versatile cable routing

We keep the cable routing on our bikes as versatile as possible so you can ride your bike like you want to. There are wide and therefore easy to reach cable ports in the frame to insert shift or brake sleeves, Di2 cables or even no sleeves at all - there are the appropriate cover plugs for all of this.

Di2-ready

Electronic shifting is already well established in road bikes as well as in mountain bikes next to classic mechanical systems. Impressively fast and reliable gear changes and minimum maintenance pay their dividends not only at the Tour de France, in cyclocross or on the Cross-Country World Cup circuit. That's why STEVENS road bike and MTB frames are "Di2"-ready, meaning they are prepared for an elegant integration of batteries and electric cables (instead of usual wire cables). Even for the classy Alfine gear hub Shimano offers an electronic version.

Tapered Steerer / Tapered Headtube

Fork shaft (or steerer tube) and head tube are tapered, meaning their diameter increases from top to bottom resulting in a conical shape. The diameter needs to be bigger at the bottom since this is where higher stress is applied - especially when the bike has a higher total weight due to luggage or an e-drive and battery. Also tapered steerers feature a smoother force transfer (like forces caused by hard braking) to the downtube than forks with a continuous 1 1/8" diameter.

QR15 Front Thru-Axle

"15" stands for the diameter in millimeters, "QR" for quick release. Combined they are the most useful method to fix the front wheel to the (suspension) fork. With convincing advantages: high stiffness, precise positioning of the brake disc and super-easy handling. So STEVENS specs almost all its mountain bikes and even high-quality trekking bikes, cross bikes and pedelecs with a thru-axle. Additionally, especially with 29" MTBs axle spacing is increased from 100 to 110 mm which makes the design even stiffer.

Vybavení

einfach
erweitert

Chassis

Frame

Carbon SL HMF

Double Chamber Technology
Axle: QR12x148
Brake: postmount disc 160
BB: Pressfit 92
Front derailleur mount: direct mount (high)
Cable routing: intern

Přední vidlice

Fox 32 Float SC Performance

Step Cast technology
Travel: 100 mm
Air suspension
Remote Lockout
Tapered Steerer 1 1/8" - 1 1/2"
Axle: QR15x110
Brake: postmount disc 6"

Hlavové složení

STEVENS MTB Taper 1 1/8"-1 1/2"

Upper bearing cup: IS42/28.6
Lower bearing cup: IS52/40

Brzdy

Shimano Deore XT

BR-M8000
Hydraulic disc brake
Rotor: SM-RT81
Rotor size: 180/160 mm
Center-Lock

Pohon

Kliky

Shimano Deore XT

FC-M8000-B2
36-26 T
BB type: Pressfit BB92 / Hollowtech II
Boost chain line

Přesmykač

Shimano Deore XT

FD-M8020-D6
Side-Swing

Přehazovačka

Shimano Deore XT Shadow+

RD-M8000-DGS
11-speed
Direct Mount
Total capacity: 39 T

Řetěz: Shimano CN-HG701

Kazeta

Shimano Deore XT

CS-M8000
11-speed
Combination: 11-13-15-17-19-21-24-28-32-37-42 T

Gear ratio: 1.36 - 7.17 m, 2*11

Gear ratio: 1.43 - 7.56 m, 2*11

Kola

Zapletená kola

DT Swiss M 1900 Spline

ETRTO: 25 x 584 | 25 x 622

Pneumatiky

Schwalbe Rocket Ron Evolution

Tire size: 57-584 | 622
Foldable
Addix Speed compound
LiteSkin

Cockpit

Řidítka

Oxygen Scorpo

Width: 700 mm
Backsweep: 7°
Rise: 11 mm
Clamp: 31.8 mm

Představec

Oxygen Scorpo MTB

Handlebar clamp: 31.8 mm
Angle: 5°

Sedlo: Oxygen Roccia

Sedlovka

Oxygen Scorpo MTB

Length: 380 mm
Diameter: 27.2 mm
Insertion depth: min. 100 mm

Řazení

Shimano Deore XT

SL-M8000 I-Spec II
11-speed

Brzdové páky

Shimano Deore XT

BL-M8000
2 finger

Data

Hmotnost: 10.6 kg

Velikost: 27,5" - 16" | 29" - 18", 20", 22"

Barva: Foggy Grey

Laden weight

115 kg

Bike incl. rider, clothing and luggage

Testy

Bike Freak Magazine: Ein komplettes Bike

04/2015

The Sonora ES is a complete bike with outstanding ride characteristics in all kinds of terrain. The bike radiates fun!

Bikefreak Magazin: Dauertest sehr gut

01/2015

The carbon hardtail scored best marks (8 of 9 points) in all categories in Bikefreak Magazine's readers poll. In climbing abilities and nimbleness the Sonora ES was the best bike in test.

Geometrie

schematische Skizze eines Fahrrades mit eingezeichneten Geometrie-Messpunkten

Velikost rámu (")		16	18	20	22	Způsob měření
Wheelsize (")		27.5	29	29	29
Délka sedlovky	A1	605	627	642	652	nominální
Délka sedlovky	A2	376	427	478	510	od středu šlapky k horní části sedlovky
Délka sedlovky	A3	341	388	440	470	od středu šlapky k horní části horního rámu
Delka horního rámu	B	584	584	598	617
Horní rámová trubka	C	595	600	620	640	do řezného bodu opěry sedadla
úhel řidítkové trubky (°)	D	69	70	70	70
úhel sedlovky (°)	E	74.5	74.5	74.5	74.5
Odstup mezi koly	F	1106	1108	1123	1144
Délka napnutí řetězu	G	425	435	435	435
Délka řidítkové trubky	H	95	95	110	120
Snížení pedálů	I	53	70	70	70	vzdálenost náboje
Výška pedálů	K	301	301	301	301	vzdálenost od země
Zahnutí vidlic	L	44	43	43	43
Nakloněný	M	254	227	193	171	rozdíl stupně horního rámu v/h
Rádius pojezdového kola	N	354	371	371	371	kolo s obručí
Výška nápravy	O	714	755	787	811	od horního rámu k zemi*
Výška vidlic	P	490	490	490	490	včetně řídicí sady
Odstup mezi klikou pedálu a předním kolem	Q	686	676	697	718
Reach	R	433	432	448	466	center bottom bracket to center headtube, horizontal
Stack	S	583	605	619	628	center bottom bracket to center headtube, vertical
Stack/Reach (1:x)		1.35	1.4	1.38	1.35	ratio stack to reach
Sedlovka Ø		27.2	27.2	27.2	27.2
Délka přední části		60	75	90	100	střed-střed
úhel přední části (°)		6	6	6	6
Upevnění řidítek		31.8	31.8	31.8	31.8
Distanční podložka		8.3 + 5 + 5 + 5 + 5
šířka řidítek		760	760	760	760
Délka hřídele		170	175	175	175
		16	18	20	22

* 1/3 sedlovky odstranit

Bike-Category 5

Cross-country, marathon and touring mountain bikes

This category describes STEVENS cross-country, marathon and touring mountain bikes and is typically represented by STEVENS mountain bike hardtails and full suspension STEVENS bikes with short suspension travel. STEVENS MTB Marathon 120, Carbon XC, Alloy XC.

Instructions on intended use

The permissible overall weight (rider incl. baggage and bicycle) should not exceed 115 kg. Under certain circumstances the permissible maximum weight can be further limited by the component manufacturers’ recommendations for use.

The following weight limits for the rider including equipment and STEVENS bicycle apply to special wheels:

Mavic:	100 kg
DT Swiss:	110 kg

STEVENS cross-country, marathon and touring mountain bikes are suitable for off-road use, but not for blocked terrain, tricks, stair riding etc., training and competitive use in the categories freeride, dirt, downhill. STEVENS bikes of this category can be used on surfaces permitted for bikes of the categories 1 and 3 and are in addition suitable for rough and unpaved terrains. Sporadic jumps are also included in the field of use of these STEVENS bikes. But particularly inexperienced riders doing jumps may land inappropriately, thus increasing the acting forces significantly which may result in damage and injuries. We recommend that you train your skills in a riding technique course. If necessary, ask your STEVENS dealer to inspect your STEVENS bicycle at shorter intervals than according to the service and maintenance schedule.

For full suspension STEVENS mountain bikes trailers are not permitted.

Due to their design and fittings, STEVENS mountain bikes of the category 5 are not always suitable for being used on public roads. If you want to use them on public roads, these bikes must be fitted with the prescribed equipment. Observe the traffic rules when riding on public roads. For more information see chapter “Legal Requirements for Riding on Public Roads” in your comprehensive STEVENS user manual on the enclosed CD-ROM

Danger:

STEVENS bicycles of the category 5 are not suitable for use on blocked terrain, jumps, slides, stair riding, stoppies, wheelies, tricks etc.!

The mountain bike itself describing one particular type of bike does not exist any longer. Various types of mountain bikes for specific uses have been developed instead. Be sure to use your STEVENS mountain bike only according to its intended use. Observe the traffic rules when riding on public roads.

Sonora ES

Recommended Frame Size

Pricing

This Is What You Get …

Technology

Boost-Standard fork

Boost Rear Axle Spacing

High-Modulus Carbon Fibres

Versatile cable routing

Di2-ready

Tapered Steerer / Tapered Headtube

QR15 Front Thru-Axle

Boost-Standard Fork

Boost Rear Axle Spacing

High Modulus Carbon Fibers

Versatile cable routing

Di2-ready

Tapered Steerer / Tapered Headtube

QR15 Front Thru-Axle

Vybavení

Chassis

Pohon

Kola

Cockpit

Data

Testy

Bike Freak Magazine: Ein komplettes Bike

Bikefreak Magazin: Dauertest sehr gut

Geometrie