R1 mudeli tootmisaastad peaksid umbes nii olema (esmane reg võib olla kasvõi 2013):
4xv / RN01 - 1998-1999 (karpad)
5jj / RN04 - 2000-2001 (karpad)
need eelmised omavahel VÄGA sarnased, väga paljud jupid on samad või teineteisega asendatavad vaatamata erinevale võimalikule orig.tootekoodile.
5pw / RN09 - 2002-2003 (sissepritse - küll kaugelt vaadates üsna karpade moodi oma vaakumkambrite jms sodiga seal küljes kuid siiski juba kütuse elektrooniliste pihustitega)
Sellel mudelil juba eelnevatega mõnevõrra rohkem erinevusi, küll siiski paljud jupid sobivad (v.a. keredetailid).
Mis 5pw mootori installeerimist vanemale 1998-2001 raamile puudutab siis minu teada on ainuke vahe esimeste ülemiste mootorikinnituse juures kuid sellest piisab, et lihtne mootorivahetus ei mängi enam välja... Mootoritel on plokil tähised peal, vist paremal pool, selgelt näha ka kui mootor vahel, vastavalt 4xv, 5jj või 5pw.
Mootorite erinevused:
The first R1 appeared in 1998 (know as the 4XV) and had 150 bhp, it was fitted with 4 40mm Mikuni BDSR 40 carbs.
The second generation arrived in 2000 (5JJ) and had 160bhp. It had many improvements over the earlier engine these included, modified carbs, revised camshaft lubrication, lighter gearbox internals, and altered ratios including a taller 1st gear.
In 2002 the 5PW engine was launched. It now was fitted with fuel injection, although looking at one you would think it was still on carbs. This is achieved by a CV slide controlled by vacuum. The main advantage of this over the earlier models is it can rev higher and faster. Power was up slightly to 164bhp