JT JTA1303BLK 42T motorcycle rear sprocket – main product image
JT JTA1303BLK 42T motorcycle rear sprocket – additional product view 2
JT JTA1303BLK 42T motorcycle rear sprocket – main product image
JT JTA1303BLK 42T motorcycle rear sprocket – additional product view 2

JT Sprockets

Rear aluminium RACE sprocket JTA1303BLK-42

SKU: JTA1303BLK-42

In stock, ready to ship

Sale price €29,90
Tax included and Shipping calculated at checkout.

Please Note:
Products without an "In Stock" badge are available on backorder.

This is especially true for full suspension products, which are custom-made to fit your specific dimensions and riding style. These items are built to order and typically require 2–5 weeks for delivery.

Rear aluminium RACE sprocket JTA1303BLK-42

JT JTA1303BLK 42T Rear sprocket

Choose the JT JTA1303BLK 42-tooth rear sprocket for replacement service or to fine-tune the final-drive ratio.

  • JT part number: JTA1303BLK
  • Tooth count: 42
  • Position: Rear
  • Precision-machined tooth profile helps provide smooth chain engagement
  • Black finish (BLK) variant (finish varies by range)
  • Material: 7075‑T6 aluminium alloy (JT RaceLite range).

Gearing note: Changing sprocket tooth counts alters the final-drive ratio: more rear teeth or fewer front teeth generally increase acceleration, while the reverse can favour higher speed.

Fitment: Fitment depends on the JT part number. Check your motorcycle model, year and chain pitch/size before purchase.

Maintenance: Check chain alignment and tighten to the manufacturer’s torque specification; inspect chain tension again after the first ride.
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