In addition to installing all the Jenks' Bolts products, my Bonneville and Thruxton, pictured below have been modified to improve performance and riding pleasure.

Both Bonneville and Thruxton were both supplied by Three Cross Motorcycles Ltd in Wimborne, Dorset, England, one of Europe's largest Triumph dealers and one of the first to open a new stand alone "Triumph Showroom".

You can contact them by visiting: www.threecrossretail.co.uk

Bonneville Accessories

The Cockpit Fairing

The Sprint Fairing gives good weather protection, produces far less turbulence than the Triumph roadster screen and makes high speed riding a pleasure. It is made from composite reinforced resin, has a smooth finish surface inside and out and looks great! Sprint make only to order and will paint the fairing in any colour that you chose.

Contact Sprint Manufacturing for more details: www.sprintmanufacturing.co.uk

Performance front disk from Beringer SA

The stock front disc stops the Bonneville, but is unimpressive and lacks feel. The Beringer fully floating cast iron disc, complete with sintered bronze pads restores the sort of braking performance that is associated with Triumph's sports and touring bikes and which Triumph have fitted to the Thruxton.

I fitted a Beringer fully floating cast iron disc and Beringer sintered pads, with the standard Triumph calliper, to my Bonneville. It improved both feel and stopping power and is strongly recommended if any power enhancing modifications are made.

For more information contact Beringer in France at: Beringer Brake System, F-42940 Chatelneuf, France. Phone: +33 477 76 82 95, Fax: +33 477 76 80 09

Beringer do not have a web site: in the UK, Jack Lilley is the Authorised Distributor and offers a mail order service for Beringer products to any destination.

Luggage rack from Renntec Ltd

From the UK rack specialists Renntec I got a great rack that acts as a pillion grab handle and gives some welcome luggage capacity. It looks good and complements the Bonnie, but I had to remove it as it does not fit with a Corbin Smuggler seat!

Contact Renntec for more details: www.renntec.co.uk

Span Adjustable brake lever

For those with "smaller" hands the span on the non-adjustable brake lever on the early Bonnevilles is a bit wide for comfort. Span adjustable levers now standard on the 900cc T100 and Thruxton and are available from BellaCorse and Jack Lilley.

18 tooth front Sprocket

Many Bonnie riders feel that riding with the standard gear set they could use a 6th ratio! This is even more noticeable when the Bonnie has larger jets, the UniFilter and a free flow exhaust.

Fitting a slightly larger main sprocket lowers the gearing and improves driveability. Also, when in 5th gear the rev counter and speedometer needles move in parallel!

The 18 tooth sprocket is standard on the 900cc T100 and Thruxton and is available from Triumph

Bonneville and Thruxton

Carburettor Tuning

Please download our "Tuning notes" booklet for details of how to improve your Bonneville's performance: the ultimate is to fit a big bore (900+cc), forged pistons, fuel injection and a turbo, with a totally reliable 95bhp and 95 foot pounds or torque, but it is not cheap!

For more information on the Turbo Bonnie got to: www.stabbarps-auto.com/bonneville1.html

Free Flow Exhausts

The stock bikes are supplied with exhausts that are optimised to meet drive by noise regulations. On the Bonneville there is a large "hole" in the torque curve between 3000 and 4000 rpm and the sound is not in keeping with the traditional look of the bike. The Thruxton is better, but still there is more mechanical noise from the motor than exhaust!

A number of companies, including Triumph, offer "Off Road" exhausts that solve this problem. But as they are not "Type Approved" for road use they may only be used off road.

I fitted the Triumph original parts, as shown in the photo. In addition there are a growing range of options from Norman Hyde, Jack Lilley, Mototwin and others that looks and sound good. It is even possible, by having customised down-pipes made, to get rid of the "kink" in the exhaust…. As the next photo shows:

Scottoiler

To eliminate premature chain wear and take away the chore of regular chain lubrication the Scottoiler is invaluable.

Contact Scottoiler Ltd for more information: www.scottoiler.com

Corbin Seat

The stock Triumph seat is not the most comfortable seat in the world, nor does it look very "retro".

There are a number of companies who offer alternative seats including Triumph, Norman Hyde, Mototwin and Corbin: many consider the Corbin range from the USA to be the best.

For the solo rider the "Smuggler" with its neat lockable storage space is the pinnacle of comfort, utility and appearance, but it is not cheap!

For more information visit: www.corbin.com

Ikon Suspension

The stock Triumph rear shock absorbers are not the best in the world and many consider the ride and roadholding are limited by these items. Fitting "Ikon" rear shock absorbers from Proven Products Pty Ltd in Australia have transformed the ride and improved roadholding.

Many T100 owners chose to fit the 1" longer Thruxton units to improve turn in and steering feel.

Fitting Ikon progressive front springs made a considerable difference, improving both ride comfort and steering response.

There are a number of suppliers of shock absorbers for the Bonnie, including Hagon, Works, Progressive and Ohlins. The Ikon name may not be immediately recognised, but it is "Koni" transposed-Proven Products took over the Koni range of motorcycle shock absorbers some years ago and the Ikons are the proven and respected Koni "Dial-a-Ride" units.

For more information visit: www.ikonsuspension.com

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