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The O.S. R21 .21 On-Road Club Racer Nitro Engine was developed for racers that love the sport. The R21 Club Racer features a variety of parts designed based on the high-end OS SPEED R2102 model in order to achieve both the ease of handling and high performance required for on road racing. Compared to similar quality engines, this engine is extremely affordable and is a great option for anyone looking for a budget priced 1/8 on road engine.

Specifications:
Displacement:3.49cc / 0.213cu.in
Output:2.75ps / 2.71hp @ 32,000r.p.m.
Bore:16.08mm / 0.633in.
Stroke:17.2mm / 0.6771n.
Practical RPM Range:3,000 - 41,500r.p.m.
Weight:350g / 12.35oz." ], "Product_site_launch_date": [ "2018-08-09T13:46:20.976Z" ], "Publisher": [ "OS Engines" ], "Rank": [ "1246817", "1326336", "323", "362" ], "Registration_status": [ "not_capable_emitting_rf_energy" ], "Special_feature": [ "Portable" ], "StrippedMpns": [ "OSMG2032" ], "Studio": [ "OS Engines" ], "Style": [ "Modern" ], "Target_audience_keyword": [ "Men", "boys", "unisex adults", "women" ], "Theme": [ "car", "truck" ], "Title": [ "OS Engines 1B900 R21 1/8 On-Road Club Racer Engine OSMG2032 .16+ Car/Truck Engines", "OS Engines R21 1/8 On-Road Club Racer Engine OSMG2032 .16+ Car/Truck Engines" ], "TradeInEligible": [ "False" ], "Type": [ "Unknown", "ean", "unknown" ], "URL": [ "https://m.media-amazon.com/images/I/51ftBAiv3XL._SL75_.jpg" ], "Unit": [ "inches", "pounds" ], "Units": [ "inches", "months", "pixels", "pounds" ], "Variant": [ "MAIN", "PT01", "PT02", "PT03", "PT04", "PT05", "PT06" ], "WebsiteDisplayGroup": [ "toy_display_on_website" ], "WebsiteDisplayGroupName": [ "Toy" ], "Weight": [ "1.06", "1.42" ], "Width": [ "2000", "4.9", "4.90", "500", "75" ] }, "images": [], "distributors": [ { "name": "horizonhobby.com", "sku": "1B900", "url": "https://www.horizonhobby.com/product/r21-1-8-on-road-club-racer-engine/OSMG2032.html", "pricing": [ { "quantity": 1, "price_usd": 441.47 } ], "stock": { "available": false, "quantity": null, "lead_time_days": null }, "moq": 1, "multiple": 1, "image": "https://www.dataalchemy.com/python/getu/f6ac47eb-2963-4156-99ce-8bf537cd6e04" }, { "name": "Tower Hobbies", "sku": "OSMG2032", "url": "https://www.towerhobbies.com/product/r21-18-on-road-club-racer-engine/OSMG2032.html", "pricing": [ { "quantity": 1, "price_usd": 441.47 } ], "stock": { "available": false, "quantity": null, "lead_time_days": null }, "moq": 1, "multiple": 1, "image": "https://www.dataalchemy.com/python/getu/817b204d-41c2-46cc-9bc1-778293085916" } ], "amazon": { "available": true, "products": [ { "asin": "B07GBBNSQN", "title": "OS Engines 1B900 R21 1/8 On-Road Club Racer Engine OSMG2032 .16+ Car/Truck Engines", "brand": "OS Engines", "image": "https://m.media-amazon.com/images/I/51ftBAiv3XL._SL75_.jpg", "url": "https://www.amazon.com/dp/B07GBBNSQN?tag=atariguidz-20", "description": "

The O.S. R21 .21 On-Road Club Racer Nitro Engine was developed for racers that love the sport. The R21 Club Racer features a variety of parts designed based on the high-end OS SPEED R2102 model in order to achieve both the ease of handling and high performance required for on road racing. Compared to similar quality engines, this engine is extremely affordable and is a great option for anyone looking for a budget priced 1/8 on road engine.

Specifications:
Displacement:3.49cc / 0.213cu.in
Output:2.75ps / 2.71hp @ 32,000r.p.m.
Bore:16.08mm / 0.633in.
Stroke:17.2mm / 0.6771n.
Practical RPM Range:3,000 - 41,500r.p.m.
Weight:350g / 12.35oz." } ] }, "metadata": { "generated_date": "2026-02-08", "last_updated": "2026-02-08", "data_sources": [ "Tower Hobbies", "horizonhobby.com", "Amazon" ], "completeness": 0.9, "version": "1.1" }, "enrichment": { "sales_data": { "B07GBBNSQN": { "revenue": 0, "sales_count": 0, "has_buybox": false, "offer_count": null } }, "case_quantities": { "B07GBBNSQN": 1 } } } }, "pagination": null, "nav": { "home": "/python/html4/index.html", "brands": "/python/html4/menus/brands.html", "parts": "/python/html4/menus/parts.html", "attributes": "/python/html4/menus/attributes.html", "attr_values": "/python/html4/menus/attr_values.html", "xrefs": "/python/html4/menus/xrefs.html" } }