Java Siluro 6-18S Disc Road Bike

The Java Siluro 6-18S is an aluminium road bike with 2x9 (18-speed) Shimano Sora R3000 shifting, Deca hydraulic disc brakes and a Java Deca integrated handlebar. Siluro (Italian for "torpedo") is the original model of Java's road range; the Siluro 6 is the fourth generation, which Java says moved to an integrated handlebar and internal cable routing. A good fit for a first road bike.

Java Siluro 6-18S Disc Road Bike

At a glance

• Category: aluminium road bike, disc brakes, 18-speed mechanical shifting
• Brand: Java (Shenzhen ChuangXinWei Bicycle Co., Ltd, China), fourth-generation Siluro; official spelling JAVA SILURO 6
• Drivetrain: Shimano Sora R3000, 2x9 (18-speed), 50/34T chainset, 11-28T cassette
• Brakes: Deca cable-actuated hydraulic disc calipers, 160 mm rotors
• Handlebar: JAVA Deca integrated handlebar (bar and stem in one), 400 x 90 mm
• Sizes and colours (Jollymap): 45, 48, 50, 52; Black, Titanium, Red
• Best for: first-time road bike buyers riding for fitness, cycle tracks and weekend rides who want disc brakes and an integrated cockpit

What problem does it solve?

Many first-time buyers want disc brakes and a clean front end without paying for a carbon frame. The Siluro 6-18S pairs an aluminium frame with Shimano Sora R3000 18-speed, Deca hydraulic disc calipers, an integrated handlebar and internal routing.

Who is it for?

Riders new to road cycling who want an aluminium bike for fitness, cycle tracks and weekend rides. Other 18-speed Sora R3000 options are the Java Auriga Disc Road Bike (aero aluminium frame) and the Java Siluro 3 18S Disc Road Bike. If you already ride and want a carbon aero frame with carbon wheels, compare the Java J.Air Fuoco Carbon Disc Road Bike.

Key features

Fourth-generation Siluro: integrated bar and internal routing

According to Java, the Siluro has been its main entry-level training road bike since 2015; it gained aero elements in 2017 and disc brakes in 2019, and the fourth-generation Siluro 6 moved to an integrated handlebar and internal cable routing.

18-speed Shimano Sora R3000

Shimano Sora R3000 shifters and front and rear derailleurs, 2x9 (18-speed), with a forged aluminium 50/34T chainset (170 mm) and an 11-28T cassette.

Deca hydraulic disc brakes

Deca cable-actuated hydraulic disc calipers with 160 mm rotors, operated by the Shimano levers.

Deca integrated handlebar

The JAVA Deca integrated handlebar combines bar and stem in one piece, 400 x 90 mm.

Siluro 6-18S vs Auriga vs J.Air Fuoco

The table below compares three Java disc road bikes:

Source: Jollymap product pages for Auriga and J.Air Fuoco (Auriga specs from the 2023 archived Java website).

Specifications

Brand / model	Java Siluro 6 (18-speed Sora disc version)
Frame	Aluminium, internal routing
Front and rear hub	DECA (axle standard: see note below)
Rims	Deca 40mm height aluminum
Tires	CST 700*25c
Shifters	Shimano SORA R3000
Front / rear derailleur	Shimano SORA R3000
Chainset	Forged Aluminum 6061 50/34, 170mm, compact
Bottom bracket	BB68
Cassette	11-28T, 9 speed
Chain	KMC 9S
Brakeset	Shimano brake levers, Deca hydraulic disc clamps cable control, 160mm rotors
Handlebar	JAVA Deca Aerodynamic Integrated Handlebar, 400*90mm
Saddle	DECAF ED
Pedals	Normal plastic pedals included
Colours (Jollymap)	Black, Titanium, Red
Sizes (Jollymap)	45, 48, 50, 52

Spec source: Jollymap's original product data (18-speed Sora version), checked against overseas Java dealers' Siluro 6 Sora 18S specs; Siluro family history from Java's website. The Siluro 6 TOP now on Java's website is a 12-speed version with different specs. Hubs: Jollymap's original data lists 12 mm thru-axles front and rear, while overseas dealers list 9 mm quick release; please contact us to confirm before ordering. Parts may vary by production batch.

Jollymap recommends

Java has not published a rider height chart for this version. Before ordering, chat with us or message our Facebook page with your height, inseam and preferred colour, and we will help you confirm the size and actual build. To fine-tune your position after delivery, see Jollymap's Basic Bike Fitting service.

FAQ

Siluro 6-18S vs Siluro 6 TOP: what is the difference?

They are different versions. The Siluro 6-18S on this page uses Shimano Sora R3000 18-speed. Java says the later Siluro 6 TOP added two-tone paint and thru-axles; the Siluro 6 TOP now on Java's website comes as a Shimano 105 (R7120 levers, R7100 derailleurs) 12-speed version and an L-TWOO ER7/9 electronic version, in sizes XXS–XL.

Is the Siluro 6 frame aluminium or carbon?

The frame is aluminium. Overseas Java dealers list a carbon fork with a tapered steerer for this version; contact us before ordering if you want to confirm the actual build.

How much does the Java Siluro 6 weigh?

Java has not published a complete-bike weight for this version. Overseas dealers list about 11.2–11.5 kg for size M, for reference only; actual weight varies with size and parts.

What sizes are available and how do I choose?

Jollymap offers 45, 48, 50 and 52. Java has not published a height chart for this version (the XXS–XL sizes of the current Siluro 6 TOP are a different frame and do not apply), so contact us with your height and inseam.

Siluro 6-18S vs Java Auriga: what is the difference?

Both are aluminium, Shimano Sora R3000 18-speed disc road bikes. The Siluro 6-18S has a Deca integrated bar and Deca cable-actuated hydraulic discs; the Auriga has an aero aluminium frame and, per Java's website, an aluminium fork.

Siluro 6 vs Siluro 3: what is the difference?

The Siluro 6 is the newer generation. According to Java, the third-generation Siluro of 2019 introduced disc brakes, and the fourth-generation Siluro 6 added an integrated handlebar and internal routing. Jollymap also lists the Java Siluro 3 18S Disc Road Bike.

Does the Siluro 6-18S have hydraulic disc brakes?

Yes, hydraulic calipers operated by cable. The Deca calipers use 160 mm rotors and are paired with mechanical Shimano levers, so it is not a full hydraulic system.

Where can I buy the Java Siluro 6 in Hong Kong?

Jollymap sells it online and in store. To confirm size, colour or build before ordering, chat with us or message our Facebook page.

 

Specifications and components follow the manufacturer's latest release and may change without notice. If in doubt, please contact us to confirm before ordering.

Last updated: October 2026