Yoshimura Aluminium RS-4 With Carbon End Cap Slip-On
The development of the RS-4 system paid huge dividends in 2010 with Ryan Dungey winning the AMA 450 Supercross and Motocross Championship series as a rookie in that year and repeating his performance in 2012 with the Yoshimura backed GEICO Honda team winning both 250 Supercross Lites titles.
That same R&D has been dedicated to developing the current generation of RS-4 full system which features a unique design which provides the perfect combination of power and a quieter exhaust. The RS-4 full system consists of silencer, pentagonal shaped sleeve, tail pipe and carbon end cap and has many features including a Poly-resonant duplex chamber which aids noise reduction, a two-staged stepped baffle.
The silencer for this system comes in a variety of finishes including Aluminium, Titanium and Carbon and the header coming in a choice of Titanium or Stainless Steel. This system also comes with a choice of either the spark arrester noise baffle insert or 94DB and/or 2M Max noise baffle insert both USFS approved.
Product Specification not currently available.
UK Mainland Delivery Prices
| Delivery Type | Cost | Estimated Delivery Time |
| Standard Delivery | from £1.33 | 2-3 working days from day of despatch(Excludes weekends and Bank Holidays) |
| Express Delivery | from £1.68 | 1-2 working days from day of despatch(Excludes weekends and Bank Holidays) |
| Special Delivery | from £12.54 | For any next working day delivery order before 4.30pm Monday to Thursday. For any weekend delivery order before 4.30pm Friday |
| Click & Collect | from £7.62 | Collect your parcel from a local post office. 2-3 working days from day of despatch(Excludes weekends and Bank Holidays) |
For international shipping please visit our delivery page.
For information about returning an item please visit our returns page.
Our Payment Options
Online we currently accept payment from the methods listed above including a wide range of finance options. In store we also accept payment in the form of cash and gift vouchers.
Finance Options
In order to get the kit you want, when you need it, without ruining the family finances we offer a highly flexible range of finance options to help you get the best products on your bike now rather than at the end of the season when you've saved up the cash to make the purchase. There are even interest free options which effectively spread the cost without costing you any extra.
D.T.(Automotives) Limited T/A Demon Tweeks is authorised and regulated by the Financial Conduct Authority and is the broker and not the lender. Our FCA registration number is 689896. D.T.(Automotives) Limited offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance and Klarna. Credit is provided subject to affordability, age and status. Minimum spend applies. Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority.
