Renthal Honda Factory Sprocket Kit CR250 CRF250 CRF450 520 Chain 13T 52T K154-25.
This item is new. It's listed as used because there have been too many returns for no good reasons in general. Please look at pictures for condition.
Years: 1988–2026+ (Specifically labeled for 1999–2000 models inside this package)
Models: CR250R / CRF250R / CRF450R (and related Off-Road/TRX ATV variants sharing the standard 5-hole Honda hub layout). [1]
- Rear Sprocket (Part # 154U-520-52GPSI): An Ultralight 52-Tooth Aluminum Rear Sprocket (520 Pitch) in a Silver/Natural finish. Note: The factory label indicates a "+2T" arrangement, meaning this contains 2 more teeth than stock setup for increased low-end acceleration.
- Front Sprocket (Part # 253U-520-13GP): An Ultralight Grooved 13-Tooth Case-Hardened Steel Front Sprocket (520 Pitch). [1, 2, 3, 4, 5]
Genuine Renthal "Honda Factory Kit" Front & Rear Sprocket Combo Pack **Kit Part Number:** K154-250-002 / K018 **Rear Sprocket Part Number:** 154U-520-52GPSI (52-Teeth, Aluminum, Silver) **Front Sprocket Part Number:** 253U-520-13GP (13-Teeth, Grooved Steel) **Chain Size / Pitch:** 520 Pitch **Condition:** New Old Stock (NOS) / New in Original Factory Packaging ### Product Description Up for sale is a premium, New Old Stock (NOS) genuine Renthal "Honda Factory Kit" sprocket combination set. Renthal chainwheels are precision CNC-machined to incredibly tight tolerances, making them the top choice for factory motocross and supercross teams worldwide. The rear sprocket features Renthal's legendary high-strength 7075-T6 aluminum alloy construction, delivering a massive 66% weight reduction compared to steel while offering mud-clearing self-cleaning grooves. The front sprocket is built from case-hardened 655M13 nickel-chrome steel with specialty grooved valleys to limit dirt accumulation and prolong chain lifespan. *Please note: This is a "+2T" setup over stock gearing, engineered to improve punch, bottom-end torque, and corner exit speeds.* ### Exact Kit Fitment Guide The packaging is specifically curated for the following baseline generations, though the underlying sprockets carry cross-compatibility across Honda's standard 5-bolt rear dirt bike hub system: * **1999–2000 Honda CR250R** (Direct Factory Kit Matching) * Wide cross-fitment across **1988–2026 Honda CR250R, CRF250R, CRF250X, CRF450R, CRF450X, and TRX450R models** utilizing 520 chain sizes.
Selling as pictured, save on shipping by coming to store in Butler, Pa.
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