Which chain length do I need for my kart?

The chain length depends on gearing (sprocket + rear ring) and axle position. As a rule of thumb: 106–108 links for 219 chain with typical gearing, 96–102 links for 428 shifter chain. Adjust to the exact link count on your kart via axle position; better one link too many than one too few.

219 or 428 chain — what is the difference?

219 is the standard chain for direct-drive karts (KF, OK, Rotax, X30) — narrower and lighter. 428 is the wider, sturdier chain for shifter karts (KZ, KZ2) with higher torque. Not interchangeable — the sprocket, rear ring and chain guard have to match.

How often does the karting chain need replacing?

Under racing conditions a 219 chain typically lasts 8–15 race weekends, depending on maintenance and lubrication. Warning signs: visible stretch (chain length grows), stiff links, unusual noise. Always replace sprocket and rear ring together with the chain — worn cogs immediately ruin a new chain.

Which sprocket / rear ring for my gearing?

Short gearing (more teeth at the rear or fewer at the front): more acceleration, lower top speed — good for tight tracks with many corners. Long gearing: less acceleration, higher top speed — good for tracks with long straights. Rule of thumb: 219 chain with rear rings 72–92 and front sprockets 9–13, in single-tooth steps.

Do I need to lubricate the karting chain?

Yes — every 2–3 heats with dedicated karting chain lube (dry lube for dust, wax for wet). Do not use motorcycle chain lube: too thick, binds dust. Wipe the chain with a rag before applying new lube; clean once a race weekend with chain cleaner.

Drivetrain (Chain & Clutch)

Chain drive & clutch for kart engines

From the engine sprocket via the chain to the rear axle sprocket: the drivetrain determines how effectively engine power reaches the track. Wrong gearing costs lap time, wrong chain will not survive a race weekend. At keep-racing you will find chains in 219 (kart standard) and 428 (shifter/KZ) as well as sprockets and pinions for all common engine families — Rotax, IAME, TM, Yamaha, Honda, Vortex and Biland.

What you will find here

Chains — 219 and 428, standard and O-ring, in various lengths.
Rear sprockets — aluminium (Ergal) and steel, bore diameters 30 mm, 40 mm and 50 mm, in all relevant tooth counts.
Pinions — 428 pinions engine-specific for Rotax, TM, Vortex, Yamaha and Biland; 219 pinions for IAME X30, Honda and others.
Clutches — centrifugal, dry and gear clutches for Bambini, KF and OK classes (Horstman 95 mm & 98 mm).
Chain accessories — tensioners, guards, rivet tools, lubrication.

Choosing the right gearing

Rule of thumb: short track with tight corners → shorter gearing (more teeth on the rear sprocket), long track with high-speed sections → longer gearing. For fine-tuning, our team is happy to advise you personally.