Junak M07R (1956-59) vs Beta RS 450 (2012) vs Avinton / Wakan Wakan / Avinton Track Racer Special () vs Kawasaki ZX-6R (ZX 636) (2004)
Comparison technical specifications
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| Make: | Junak | Beta | Avinton / Wakan | Kawasaki |
| Model: | M07R | RS 450 | Wakan / Avinton Track Racer Special | ZX-6R (ZX 636) |
| Years: | 1956-59 | 2012 | 2004 | |
| Engine: | Four stroke, single cylinder, OHV | Four stroke, single cylinder, 4 valve | Four stroke, 45°V-twin. OHV, 4 can pushrod. | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder |
| Capacity: | 349 cc / 21.3 cub. in. | 449 cc / 27.4 cu in | 1640 cc / 100 cu-in | 636 cc / 38.8 cub in |
| Bore x Stroke: | 75 x 79 mm | 95 x 63.4 mm | 101.6 x 101.0 mm | 68 x 43.8 mm |
| Compression Ratio: | 7.0:1 | 11.95:1 | 10.3:1 | 12.8:1 |
| Ignition: | Magneto | DC-CDI with variable ignition timing, Kokusan. | CDI | Digital |
| Starting: | Kick-start | Electric and kick | Electric | Electric |
| Transmission: | Four-speed constant-mesh | 6 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain | O-ring chain, DID | Belt | Chain |
| Frame: | Double, cradle-type, welded throughout of tubing, provided with holders for side car mounting. | Molybdenum steel with double cradle split above exhaust port. Air filter access from the side | TIG welded chrome-moly steal tubular backbone frame with integrated oil tank. | Aluminium, twin spar |
| Front Suspension: | Telescopic fork with coil springs and oil damping | Sachs USD fork, Ø 48 mm, adjustable compression and rebound, TFX technology | 46mm Cariani Italy inverted fully adjustable forks | 46 mm cartridge fork with 12-way rebound, 12-way compression damping and spring preload adjustability |
| Rear Suspension: | Swinging arm sprung on telescopic elements with coil springs and oil damping. | Sachs shock w/adjustable rebound and hi/low speed compression, | Extruded aluminum swinging arm with Sachs shocks | Bottom-Link Uni-Trak with gas-charged shock, 18-way rebound, 20-way compression damping and spring preload adjustability |
| Front Brakes: | Full hub width, of expander shoe type, hand operated | Single Ø 260 mm disc, 2 piston caliper | Single 340mm disc 6 piston caliper | 2 x 300mm discs, 4 piston calipers |
| Rear Brakes: | Full hub width, of expander shoe type, foot operated | Single Ø 240 mm disc, 1 piston caliper | Single 220mm disc 2 piston caliper | Single 220mm disc, 1 piston caliper |
| Front Tyre: | 19 in | 90/90 - 21 | 120/70 ZR17 | 120/65 ZR17 |
| Rear Tyre: | 19 in | 140/80 - 18 | 180/55 ZR17 | 180/55 ZR17 |
| Seat Height: | 755 mm / 29.7 in | 934.7 mm / 36.8 in | 790 mm / 31.1 in | 820 mm / 32.3 in |
| Dry Weight: | 170 kg / 374.8 lbs | 108 kg / 240 lbs | 177 kg / 390 lbs | 174 kg / 377 lbs |
| Fuel Capacity: | 17 l / 3.9 US gal | 7.9 L / 2.1 gal | 13 Litres / 3.4 US gal | 18 Litres / 4.8 gal |