Yamaha TT 600 R 4GV spare parts

Yamaha TT 600 R 4GV spare parts - The last air-cooled rally rocket from Iwata

With the TT 600 R 4GV Yamaha said goodbye in 2003 the era of air-cooled big singles, without the character of the DJ01 water down: Same 595 cc heart, but revised crankshaft, modernized FCR carburettor jetting, EURO 2-compatible exhaust system and improved WP spring elements. The result: 45 HP, 52 Nm and 135 kg Fully tanked - ready, factory singles and modern 450s in off-road territory to make it look old. But even the most robust TT needs first class Yamaha TT 600 R 4GV spare parts, so that Piston rings don't rattle, Nicasil shines and FCR sliders are silky smooth slide. This guide contains nine chapters and around 1,700 words everything that mechanics, tourers and rally drivers need to know.

1 | Evolution & Type Codes – From DJ01 to 4GV

The DJ01 (1998–2002) set standards as an air-cooled WP factory racer. In 2003, Yamaha moved the 4GV after: identical Frame geometry, however EURO 2 cat exhaust, lambda-free FCR mapping and reinforced Crankcase ribs. Serial numbers start with JYACK followed by “4GV”. To distinguish:

2 | Engine & intake - FCR thrust with EURO 2 fine tuning

The 4GV engine retains 97 × 84 mm dimension, but receives Separately supplied oil galleries for intake and exhaust cams as well as double cooling fins in the outlet area. The Keihin FCR-41MX-Double carburettors service with 170 main jet, 45 idle, OBDVP-3 needle and 1¾ turns of air screw. Important spare parts:

Mapping tip: Open SR Racing pot → 175 HD / 48 LD, needle OBDVP-4; Oil cooler kit lowers oil ≥ 10°C. Oil change 10W-50 Ester all 2,500 km or 40 operating hours. Valve clearance 0.10 / 0.15 mm every 5,000 km; Shim Ø 9.48 mm (Hotcams set).

3 | Electrics, CDI & alternator – reliable spark

4GV relies on a 200 W alternator (stator 4GV-81410-00), Mosfet regulator and 12 V lead gel 4 Ah – battery for the first time! CDI has soft limiter at 8,250 rpm and error code flashing. Upgrades:

4 | Chassis & brakes – WP performance for sharpening

Fully adjustable WP-USD fork 43mm and WP shock absorber deliver 300 / 310 mm travel. Achieve noticeable improvements new shim stacks and more progressive springs. Brakes: 297 mm Wave in front, 245mm Wave rear. Spare & tuning parts:

5 | Maintenance schedule & wear and tear

6 | Typical weak points & solutions

7 | Useful upgrades – rally-ready in 2025

• ✓ Setrab 7-row oil cooler – Oil ≤ 100 °C even at desert temperatures.
• ✓ Excel rims 1.85/2.50 – 800 g lighter, tubeless compatible.
• ✓ 320mm oversize brake – 25% shorter braking distance on asphalt.
• ✓ LiFe battery 1.2 kg – DC conversion + LED navigation power.
• ✓ Öhlins NIX cartridge – external tension & compression; Plugin.

8 | Parts supply & scene

Yamaha continues to supply essential parts: gasket sets, Crankshaft, pistons, Nicasil cylinders. Accessories markets – Off The Road, TTRaiders, XR Land – offer rally tanks, carbon skidplates and 3-D printed air filter cages. Community sources (tt-club.de, ADVrider) share CAD files for speedometer holders, rally towers and ABS rings. Used parts search: eBay classifieds, FB groups “Yamaha TT-600 R / RE” – there you can find WP forks, OEM rims and rare 4GV CDIs.

9 | Conclusion – A kick, a boost, a permanent grin

The TT 600 R 4GV is the crowning achievement of all air-cooled ones TT series: FCR bite, WP chassis and rally frame in one package, which is lighter than many modern 450s. With high quality TT 600 R 4GV spare parts – from the Nicasil cylinder above Iridium candle up to the oversize brake - that remains Kick-start charm, wheelie torque and rally DNA preserved. Kick it. Race it. Love it.

Browse now – and prepare your 4GV for the next kick-start moment!